{"id":54039,"date":"2023-09-04T17:00:12","date_gmt":"2023-09-04T15:00:12","guid":{"rendered":"https:\/\/www.bikeradar.com\/?p=744972"},"modified":"2023-09-04T17:35:37","modified_gmt":"2023-09-04T15:35:37","slug":"hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/cyclingplus\/rss_feed\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights\/","title":{"rendered":"Hands-on with the new Shimano GRX RX820 groupset \u2013 unboxing and real weights"},"content":{"rendered":"<p class=\"rssexcerpt\"> We got our mitts on Shimano\u2019s new 12-speed GRX RX820 groupset and weighed all the shiny parts <\/p><p class=\"rssauthor\">By Jack Evans\n                \t\t<\/p><p class=\"rssbyline\">Published: Monday, 04 September 2023 at 15:00 PM<\/p><hr class=\"no-tts wp-block-separator\"\/><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body> <p>Shimano\u2019s new GRX RX820 adds a long-anticipated 12th cassette sprocket to the brand\u2019s top-tier gravel groupset.<\/p>\n<p>GRX remains mechanical for now, but the 12th sprocket and extended gear range bring it closer to SRAM and Campagnolo\u2019s <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/gravel-bike-setup\/\">gravel groupsets<\/a>.<\/p>\n<p>But it\u2019s the weight we\u2019re focusing on here \u2013 what will be the effect of an extra cassette sprocket and larger cogs on <a href=\"https:\/\/www.bikeradar.com\/news\/shimano-grx-rx820-gravel-groupset\/\">Shimano GRX RX820<\/a>?<\/p>\n<p>Before Liam Cahill reviewed the <a href=\"https:\/\/www.bikeradar.com\/reviews\/components\/groupsets\/gravel-groupset\/shimano-grx-rx820-unstoppable-review\/\">Shimano GRX820 Unstoppable groupset<\/a>, we put everything on the scales to find out what each component actually weighs.<\/p>\n<section class=\"highlight \"> <div class=\"highlight__content editor-content\"> <h3 dir=\"ltr\">New Shimano GRX RX820 and RX610: a primer<span id=\"docs-internal-guid-f6e6a53d-7fff-cadc-9007-d5f9b5437038\"\/><\/h3>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">No Di2 (for now) and no mechanical disc brakes\u00a0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Single and double chainring options<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Unbeatable, Undroppable and Unstoppable are the three new GRX configurations<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">10t smallest cog on 1x groupset<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Choice of 10-45t and 10-51t 1x cassettes\u00a0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">RX22-GS and SGS derailleur cages are interchangeable<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Second-level GRX RX610 moves to 12-speed in 1x and 2x set-ups\u00a0<\/p>\n<\/li>\n<\/ul>\n<p> <\/p><\/div> <\/section> <h2>Shimano GRX RX820 groupset component real weights<\/h2>\n<h3>Shimano GRX ST-RX820 shifters weight<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=298%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=598%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=898%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1198%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=298%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=598%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=898%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1198%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1063%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1417%2C945 4x\" type=\"image\/webp\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1063%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1417%2C945 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=403%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=808%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1213%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1618%2C1079 4x\" type=\"image\/webp\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=403%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=808%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1213%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1618%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=553%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1660%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=553%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1660%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=619%2C413, 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https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=406%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=814%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1222%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1630%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=406%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=814%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1222%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1630%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=1666%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?webp=true&amp;quality=45&amp;resize=2221%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=1666%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=45&amp;resize=2221%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744964 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0117-a2891c8.jpg?quality=90&amp;resize=619%2C413\" width=\"620\" height=\"413\" alt=\"Shimano GRX820 ST-RX820 left shifter\" title=\"_O5A0117\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> The left GRX820 ST-RX820 shifter tips the scales at 298g.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>Shimano claims the ergonomics of the new GRX brake lever and bracket are \u201cgravel-specific\u201d and designed to be used with flared <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/gravel-bike-handlebars\/\">gravel handlebars<\/a>.<\/p>\n<p>The anti-slip coating on the brake lever is borrowed from Shimano\u2019s fishing rods. This aids grip in wet weather, according to the brand.<\/p>\n<p>We weighed a pair of the 1\u00d712 ST levers at 530g \u2013 the left contributing 298g and the right 232g.<\/p>\n<ul>\n<li><strong>Claimed weight<\/strong>: 511g<\/li>\n<li><strong>Actual weight<\/strong>: 530g<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano GRX820 ST-RX820 shifters&quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;126-234&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano GRX RX820-1 crankset<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=90&amp;resize=298%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=598%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=898%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1198%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=90&amp;resize=298%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=598%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=898%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1198%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, 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https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1213%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1618%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=90&amp;resize=553%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1660%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=90&amp;resize=553%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1660%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=90&amp;resize=619%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1239%2C826 2x, 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data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=90&amp;resize=406%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=814%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1222%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1630%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=90&amp;resize=406%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=814%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1222%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1630%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=1666%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?webp=true&amp;quality=45&amp;resize=2221%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=1666%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=45&amp;resize=2221%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744968 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0149-8ff6d98.jpg?quality=90&amp;resize=619%2C413\" width=\"620\" height=\"413\" alt=\"Shimano GRX820 1x crankset\" title=\"_O5A0149\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> The 1x, 40T GRX RX820 crankset weighs 646g.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>On our scales, the single ring, 40T Shimano GRX810 RX820-1 crankset weighs 646g. Our sample has 172.5mm cranks. 170mm and 175mm lengths are also available.<\/p>\n<p>In a <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/1x-drivetrains\/\">1x drivetrain<\/a> guise, you can also choose a 42T chainring. The sole 2x drivetrain (Shimano GRX810 RX820-2 crankset) configuration is 48\/31T.<\/p>\n<p>Both <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/cranksets\/\">cranksets<\/a> incorporate Shimano\u2019s Hollowtech II technology.<\/p>\n<ul>\n<li><strong>Claimed weight<\/strong>: 655g<\/li>\n<li><strong>Actual weight<\/strong>: 646g<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano GRX820 RX820 single crankset&quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;161-299&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano GRX RX822-SGS rear derailleur<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1199%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1199%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1418%2C945 4x\" type=\"image\/webp\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1418%2C945 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/webp\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/webp\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?webp=true&amp;quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744967 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0137-f09c028.jpg?quality=90&amp;resize=620%2C413\" width=\"620\" height=\"413\" alt=\"Shimano GRX820 GRX820 RX822-SGS rear derailleur\" title=\"_O5A0137\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> The long cage GRX820 rear derailleur can accept a 10-51t cassette.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>Shimano GRX820 has two types of rear derailleur for its 1x drivetrains and one for the 2x option.<\/p>\n<p>The long-cage Shimano GRX RD-RX822-SGS <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/a-complete-guide-to-rear-derailleurs\/\">rear derailleur<\/a> has the capacity for a 10-51t cassette.<\/p>\n<p>The medium-cage Shimano GRX RX822-GS rear derailleur has a maximum sprocket size of 45t.<\/p>\n<p>Both the 2x cassette sizes (11-34t and 11-36t) work with the RX820 rear derailleur. The largest sprocket it can accommodate is 36t.<\/p>\n<p>We weighed the long-cage rear derailleur (RD-RX822-SGS) at 295g.<\/p>\n<ul>\n<li><strong>Claimed weight<\/strong>: 288g<\/li>\n<li><strong>Actual weight<\/strong>: 295g<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano GRX820 RX822-SGS rear derailleur&quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;83.3-154.7&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano CS-M8100-12 cassette<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1199%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1199%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1418%2C945 4x\" type=\"image\/webp\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1418%2C945 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/webp\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/webp\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?webp=true&amp;quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744963 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0108-aee994d.jpg?quality=90&amp;resize=620%2C413\" width=\"620\" height=\"413\" alt=\"Shimano GRX820 M8100-12 cassette\" title=\"_O5A0108\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> Shimano GRX RX820\u2019s widest gear range comes from a massive mountain bike cassette.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>The Shimano CS-M8100-12\u00a0<a href=\"https:\/\/www.bikeradar.com\/advice\/workshop\/bike-cassettes\/\">cassette<\/a> intended for the GRX 1x drivetrains comes in two sizes: 10-45t and 10-51t.<\/p>\n<p>Both have Micro Spline <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/freehubs\/\">freehubs<\/a> to accommodate that 10t sprocket. By contrast, the 11-34t and 11-36t cassettes are compatible with HG and HG+ freehubs.<\/p>\n<p>Shimano calls the pairing of the mountain bike-style 10-51t cassette and RX822-GS rear derailleur GRX RX820 Unstoppable. This is the brand\u2019s first <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/mullet-drivetrain\/\">mullet drivetrain<\/a> for <a href=\"https:\/\/www.bikeradar.com\/features\/routes-and-rides\/what-is-gravel-riding\/\">gravel riding<\/a>.<\/p>\n<p>The toothiest 10-51t cassette tips our scales at 473g and the 10-45t size is claimed to weigh 461g.<\/p>\n<ul>\n<li><strong>Claimed weight<\/strong>: 470g<\/li>\n<li><strong>Actual weight<\/strong>: 473g<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano CS-M8100-12 &quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;84-156&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano BR-RX820 brake caliper and hose<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=298%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=598%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=898%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1198%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=298%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=598%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=898%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1198%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1063%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1417%2C945 4x\" type=\"image\/webp\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1063%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1417%2C945 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=403%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=808%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1213%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1618%2C1079 4x\" type=\"image\/webp\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=403%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=808%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1213%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1618%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=553%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1660%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=553%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1660%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=619%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1858%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/webp\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=619%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1858%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=406%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=814%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1222%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1630%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=406%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=814%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1222%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1630%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=1666%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?webp=true&amp;quality=45&amp;resize=2221%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=1666%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=45&amp;resize=2221%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744969 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0156-d86f62f.jpg?quality=90&amp;resize=619%2C413\" width=\"620\" height=\"413\" alt=\"Shimano brake caliper and hose on scales\" title=\"_O5A0156\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> The gap between the brake pads is 10 per cent wider than before.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>Shimano has updated the GRX BR-RX820 brake caliper with its freshest hydraulic caliper technology.<\/p>\n<p>The bleed port moves to the outward-facing side of the caliper to be easier to access. You can now open it with an Allen key instead of a spanner.<\/p>\n<p>Shimano has also introduced Servo Wave technology and increased pad clearance by 10 per cent in a bid to quieten <a href=\"https:\/\/www.bikeradar.com\/advice\/workshop\/how-to-silence-disc-brakes\/\">disc brake noise<\/a>.<\/p>\n<p>We weighed the front BR-RX820 brake caliper and hose together at 156g. Shimano says the front caliper weighs 146g on its own.<\/p>\n<ul>\n<li><strong>Claimed weight:<\/strong> 146g (caliper only)<\/li>\n<li><strong>Actual weight:<\/strong> 156g (caliper and brake hose)<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano BR-RX820 brake caliper&quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;420-780&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano RT-CL800 160mm rotors<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1199%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1199%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1418%2C945 4x\" type=\"image\/webp\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1418%2C945 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/webp\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/webp\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?webp=true&amp;quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744966 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0119-6e86ccb.jpg?quality=90&amp;resize=620%2C413\" width=\"620\" height=\"413\" alt=\"Shimano GRX820 RT-CL800 rotor\" title=\"_O5A0119\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> The 160mm RT-CL800 rotor weighs 109g.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>Shimano GRX820 uses RT-CL800 <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/disc-brake-rotors\/\">disc brake rotors<\/a>, which were first unveiled when the <a href=\"https:\/\/www.bikeradar.com\/features\/shimano-105-di2-weight\/\">Shimano 105 Di2 R710 groupset<\/a> was launched. These, in a road context, are Ultegra-level.<\/p>\n<p>The rotors have a heavier aluminium carrier which is claimed to stop them from deforming when they heat up.<\/p>\n<p>The 160mm RT-CL800 rotor weighs 109g on our scales, which is 5g lighter than the claimed weight.<\/p>\n<ul>\n<li><strong>Claimed weight<\/strong>: 114g<\/li>\n<li><strong>Actual weight<\/strong>: 109g<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano RT-CL800 160mm rotors&quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;70-130&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano CN-M8100 chain<\/h3>\n<p>Shimano has stuck with the 12-speed CN-M8100 chain originally developed for its <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/mountain-bike-groupsets-everything-you-need-to-know\/\">mountain bike groupsets<\/a>\u00a0but is also used for its Ultegra Di2 R8100 road groupset.<\/p>\n<p>As seen originally on the <a href=\"https:\/\/www.bikeradar.com\/reviews\/components\/groupsets\/groupset-mountain\/shimano-deore-xt-m8100-review\/\">Shimano Deore XT M8100 groupset<\/a>, the extended link plate is claimed to enhance the chain\u2019s engagement and retention.<\/p>\n<ul>\n<li><strong>Claimed weight:<\/strong> 252g<\/li>\n<li><strong>Actual weight:<\/strong> 247g<\/li>\n<\/ul>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano CN-M8100 chain&quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;21-39&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <h3>Shimano GRX RX820 groupset total weight<\/h3>\n<div class=\"image-handler__container image-handler__container--aspect\" style=\"padding-bottom: calc(100% \/ 1.501210653753);\"> <picture> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1199%2C799 4x\" type=\"image\/webp\"> <source media=\"(max-width: 320px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=299%2C199, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=599%2C399 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=899%2C599 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1199%2C799 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1418%2C945 4x\" type=\"image\/webp\"> <source media=\"(max-width: 375px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=354%2C236, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=708%2C472 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1064%2C709 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1418%2C945 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/webp\"> <source media=\"(max-width: 425px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=404%2C269, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=809%2C539 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1214%2C809 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1619%2C1079 4x\" type=\"image\/jpeg\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/webp\"> <source media=\"(max-width: 589px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=554%2C369, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1107%2C738 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1661%2C1107 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=2214%2C1476 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/webp\"> <source media=\"(min-width: 992px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=620%2C413, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1239%2C826 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1859%2C1239 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=2478%2C1652 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/webp\"> <source media=\"(min-width: 768px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=407%2C271, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=815%2C543 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1223%2C815 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1631%2C1087 4x\" type=\"image\/jpeg\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?webp=true&amp;quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/webp\"> <source media=\"(min-width: 590px)\" data-srcset=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=555%2C370, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1110%2C740 2x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=1667%2C1111 3x, https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=45&amp;resize=2222%2C1481 4x\" type=\"image\/jpeg\"> <img class=\"wp-image-744970 align size-landscape_thumbnail image-handler__image image-handler__image--aspect no-wrap js-lazyload\" data-src=\"https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/21\/2023\/09\/O5A0165-17dea70.jpg?quality=90&amp;resize=620%2C413\" width=\"620\" height=\"413\" alt=\"Shimano GRX RX820 full groupset on white background\" title=\"_O5A0165\"\/>\n<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture>\n<\/div><div class=\"caption-hold\"><figcaption class=\"wp-caption-text\"><span class=\"caption-copy\"><i class=\"icon-arrow icon-camera-circle\"\/> The full GRX RX820 groupset is lighter than SRAM\u2019s closest equivalent.<\/span><\/figcaption><span class=\"im-image-caption\"> <i>Scott Windsor \/ Our Media <\/i><\/span><\/div>\n<p>All in, the \u00a31,349.92\/$1,542.92 Shimano GRX RX820 Unstoppable groupset weighs 2,822g (excluding <a href=\"https:\/\/www.bikeradar.com\/advice\/buyers-guides\/the-complete-guide-to-bottom-bracket-standards\/\">bottom bracket<\/a>).<\/p>\n<p>From SRAM, there\u2019s no 12-speed, mechanical option equivalent. Force is 12-speed but electronic-only.<\/p>\n<p>The closest competitor is <a href=\"https:\/\/www.bikeradar.com\/reviews\/components\/groupsets\/gravel-groupset\/sram-apex-eagle-review\/\">SRAM Apex Eagle<\/a>, which weighs a claimed 3,148g and costs \u00a31,071\/$1,020.<\/p>\n<div class=\"monetizer__price-comparison-container\" data-position=\"adhoc\" hidden=\"\"> <h5 class=\"monetizer__price-comparison-title monetizer-title\" style=\"background-color: #; color: #000000\">Latest deals<\/h5> <div id=\"monetizer__deals\" data-type=\"price-comparison\" data-config=\"{&quot;shopId&quot;:&quot;608&quot;,&quot;market&quot;:&quot;gbp_en&quot;,&quot;template&quot;:&quot;flxmmtwnoj&quot;,&quot;searchKeywords&quot;:&quot;Shimano GRX RX820 groupset &quot;,&quot;excludeKeywords&quot;:&quot;&quot;,&quot;geolocation&quot;:true,&quot;limit&quot;:&quot;4&quot;,&quot;priceRange&quot;:&quot;700-1300&quot;,&quot;sid&quot;:&quot;term-bikeradar-19827-pcs-txt-pos&quot;}\"\/> <div class=\"monetizer__price-comparison-explanatory-text body-copy-extra-small editor-content\"\/><\/div> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p> We got our mitts on Shimano\u2019s new 12-speed GRX RX820 groupset and weighed all the shiny parts <\/p>\n","protected":false},"author":24,"featured_media":54040,"template":"","categories":[1,36],"acf":{"readingTimeMinutes":"5"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-scaled.jpg",2560,1706,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-300x200.jpg",300,200,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-768x512.jpg",768,512,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-1024x683.jpg",800,534,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-1536x1024.jpg",1536,1024,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2023\/09\/hands-on-with-the-new-shimano-grx-rx820-groupset-unboxing-and-real-weights-2048x1365.jpg",2048,1365,true]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/cyclingplus\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"We got our mitts on Shimano\u2019s new 12-speed GRX RX820 groupset and weighed all the shiny parts","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/rss_feed\/54039"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/media\/54040"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/media?parent=54039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/categories?post=54039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}