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The new Specialized Crux is claimed to be the world\u2019s lightest gravel bike<\/a>, boasting a claimed weight of 725g for a 56cm frame, with top-end complete builds starting at 7.25kg.<\/p>\n The new bike steps away from its cyclocross<\/a> roots and is now billed as an uncompromising ultra-light gravel bike that borrows much of its design and tech from the similarly feathery Specialized Aethos<\/a> road bike.<\/p>\n Despite its light weight, the new Crux retains genuine real-world practicality, with clearance for tyres up to 2.1in wide on 650b wheels, or 47mm wide on 700c wheels. It also sticks with a threaded bottom bracket shell, and can even accommodate an internally routed dropper seatpost<\/a>.<\/p>\n With clean lines, a simple frame and no mudguard or rack mounts, the bike stands apart from the Specialized Diverge<\/a> and is \u2013 to quote Specialized \u2013 aimed at riders looking for \u201cgravel enlightenment\u201d.<\/p>\n It probably won\u2019t surprise you to hear that all of this comes at a, to put it mildly, very high premium, with the top-end S-Works model we\u2019ve been testing coming in at $12,000 \/ \u00a310,750 \/ \u20ac12,200 \/ AU$18,000. For that, you get Specialized\u2019s top-end S-Works 12r carbon frameset, a full SRAM Red eTap AXS XPLR<\/a> groupset and Roval Terra CLX wheels.<\/p>\n For those without bottomless pockets, the Pro, Expert and Comp bikes use the slightly heavier 10r layup, which adds a claimed 100g to the frame weight, but will save you a fair chunk of cash, with the cheapest build coming in at \u00a34,000 \/ $4,200 \/ \u20ac4,000 \/ AU$6,300.<\/p>\n