The Cru X is the lightest gravel bike in the world with the exceptional capability of massive tire clearance & performance gravel geometry. It’s not just the ultimate expression of gravel performance it’s your one-way ticket to gravel enlightenment. Lightest: 725g S-Works 12r & 825g 10r frames. We took the revolutionary breakthroughs that made Aethos the lightest bike ever & applied them to the Cru X. The result? A gravel bike that climbs like a dream floats over nightmarish terrain & weighs less than a full bottle in your cage. Capable: 47c/650b x 2.1” tire clearance. More clearance means more capability. With Diverge-level tire clearance Cru X takes you anywhere you can imagine at full gas. Responsive: Nimble supple & reactive. Responsive at the pedals. Supple in the saddle. With performance gravel geometry & race-influenced fit inspired by Cru Xs iconic history in ‘cross. FRAME S-Works Crux FACT 12r Carbon Rider First Engineered™ Threaded BB 12x 142mm thru-axle flat-mount disc. FORK S-Works FACT Carbon 12x 100mm thru-axle flat-mount disc SEATPOST Roval Alpinist Carbon Seatpost SEAT BINDER Specialized Alloy 30.0mm titanium bolt