{"id":46754,"date":"2023-02-22T11:00:27","date_gmt":"2023-02-22T10:00:27","guid":{"rendered":"https:\/\/www.bikeradar.com\/?p=716562"},"modified":"2023-02-22T11:34:25","modified_gmt":"2023-02-22T10:34:25","slug":"bike-of-the-week-bmcs-fourstroke-is-designed-to-be-a-race-course-demon","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/cyclingplus\/rss_feed\/bike-of-the-week-bmcs-fourstroke-is-designed-to-be-a-race-course-demon\/","title":{"rendered":"Bike of the Week | BMC\u2019s Fourstroke is designed to be a race course demon"},"content":{"rendered":"

Fourstroke XC bike features updated frame with self-dropping dropper post <\/p>

By Oscar Huckle\n \t\t<\/p>

Published: Wednesday, 22 February 2023 at 12:00 am<\/p>

\n\n

Launched in October 2022, BMC\u2019s Fourstroke has arrived at BikeRadar HQ for testing.<\/p>\n

The brand\u2019s cross-country mountain bike<\/a> was updated with a new frame featuring refreshed geometry, increased water bottle capacity and a new suspension layout.<\/p>\n

This is a race bike through-and-through, with 100mm of suspension travel<\/a> on tap.<\/p>\n

However, if you\u2019re after a bike that\u2019s more capable on gnarlier tech, BMC also launched a Fourstroke LT with 120mm of travel front and rear.<\/p>\n

Let\u2019s take a closer look at the build.<\/p>\n

A striking frame<\/h2>\n
\""BMC\"<\/picture><\/div>
BMC has updated the Fourstroke\u2019s suspension design. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
A closer look at the APS.<\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
There\u2019s a neat shelf to fend off debris. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div> <\/div>\n<\/div>\n<\/div>

The Fourstroke looks fast standing still and the frame sports BMC\u2019s top-tier 01 level carbon fibre construction.<\/p>\n

It uses BMC\u2019s twin-link APS (Advanced Pivot System) suspension design, with the shock now sitting horizontally under the top tube rather than vertically.<\/p>\n

The frame is also visually different to its predecessor and is easily identifiable from the second vertical strut on the driveside. BMC claims this increases pedalling efficiency by 20 per cent.<\/p>\n

The bottom bracket area has also been beefed up and the bike can accept up to 2.4in mountain bike tyres.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
There\u2019s a plethora of mounting points on the down tube.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

There are five strategically placed bottle cage bosses on the down tube, so you can fit up to two bottle cages. BMC says if you\u2019re using two, they need to be side-loading and they can\u2019t have a greater capacity than 550ml.<\/p>\n

The Fourstroke\u2019s geometry has been updated too, with the head tube angle a degree slacker at 66.5 degrees.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The head tube has been slackened.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

The effective seat tube angle has been steepened to 76.7 degrees. The reach is 457mm on a size medium and all sizes sport a 432mm chainstay length.<\/p>\n

What is Bike of the Week?<\/h3>\n

Every fortnight, we\u2019ll bring you a detailed first look at one of the latest bikes (or framesets) to arrive at BikeRadar HQ \u2013 from road to commuting, gravel to enduro, and anything in between.<\/p>\n

This is our chance to introduce the bike and everything that makes it unique before hitting the road or trails.<\/p>\n

Head to our\u00a0Bike of the Week hub<\/a> for previous editions.<\/p>\n

<\/p><\/div> <\/section>

Introducing Autodrop<\/h2>\n
\""BMC\"<\/picture><\/div>
BMC\u2019s Autodrop is undoubtedly the star of the show. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
There\u2019s an ergonomic lever under the grip shift. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
The valve is located on the non-driveside face of the seat tube.<\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div> <\/div>\n<\/div>\n<\/div>

\u00a0<\/p>\n

All of the Fourstroke 01 models come with BMC\u2019s new Autodrop dropper seatpost.<\/p>\n

This is a two-position dropper post<\/a> with 80mm of travel, enabling you to drop the post automatically without having to put your weight on the saddle. This saves the need to stop pedalling to focus on moving the seat out of the way \u2013 simply press the remote lever at the bar \u2013 which will be very advantageous in a race scenario.<\/p>\n

This is thanks to an air tank located inside the down tube, which compresses a spring in the dropper post when you actuate the lever.<\/p>\n

There\u2019s a valve on the non-driveside face of the seat tube to inflate it.<\/p>\n

A dependable spec list<\/h2>\n
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It\u2019s a decidedly premium build.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

The Fourstroke 01 Two retails for a heady \u00a38,800 \/ $9,499 \/ \u20ac8,999.<\/p>\n

The range starts at \u00a34,300 \/ $4,699 \/ \u20ac4,299 for the Fourstroke Four with a Shimano Deore drivetrain.<\/p>\n

It tops out at \u00a312,400 \/ $13,499 \/ \u20ac12,999 for the Fourstroke 01 LTD, which is bedecked with SRAM XX1 Eagle AXS and Fox\u2019s Float 32 SC Factory fork and Float DPS Factory shock.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The fork decals match the frame.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

This particular build comes with a RockShox SID SL Select+ fork and matching SIDLuxe Select+ shock. BMC uses the RockShox TwistLoc remote lockout front and rear.<\/p>\n

\n
\""BMC\"<\/picture><\/div>
SRAM\u2019s GX Eagle AXS drivetrain is the brand\u2019s entry point to electronic shifting. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
There\u2019s a wide-ranging 10-52 cassette. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
The wide-ranging cassette is paired with a 34t chainring. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
There\u2019s a 180mm rotor up front\u2026<\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
\u2026paired with a smaller 160mm rotor out back. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div> <\/div>\n<\/div>\n<\/div>

The bike is specced with SRAM\u2019s GX Eagle wireless electronic groupset<\/a>, with BMC speccing a 34t chainring. SRAM is also on stopping duties with its Level TLM disc brakes<\/a>.<\/p>\n

DT Swiss XR 1700 mountain bike wheels<\/a> are a fitting addition to the build, featuring a 25mm internal rim width<\/a>. The brand specs its venerable 350 hub, with straight-pull spokes lacing it to the rim.<\/p>\n

They\u2019re wrapped in Vittoria Mezcal mountain bike tyres<\/a> in a 29\u00d72.35in width.<\/p>\n

\""BMC\"<\/picture><\/div>
Hats off to BMC for shunning a fully integrated front end. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
The bar is paired with a 60mm stem. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""BMC\"<\/picture><\/div>
The Mezcal tyres should offer plenty of bite on the course. <\/span> <\/figcaption> Oscar Huckle \/ Our Media <\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div> <\/div>\n<\/div>\n<\/div>\nBMC provides its own finishing kit, with a MFB01 carbon handlebar<\/a> in a 760mm width and its MSM01 stem in a 60mm length. A Fizik Antares R7 saddle sits atop the Autodrop dropper post.\n

All-in, our size-large test bike weighs 11.6kg without pedals.<\/p>\n

\u00a0<\/p> <\/body><\/html>\n

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