The Crux is the lightest gravel bike in the world with the exceptional capability of massive tire clearance and performance gravel geometry. It’s not just the ultimate expression of gravel performance it’s your one-way ticket to gravel enlightenment. This Crux Comp comes spec'd with a reliable and smooth-shifting Shimano GRX 12-speed groupset tough DT G540 Disc wheels and 2Bliss Ready 700x40mm Pathfinder tires that hookup over nasty terrain. Lightest: 725g S-Works 12r and 825g 10r frames. We took the revolutionary breakthroughs that made Aethos the lightest bike ever and applied them to the Crux. The result? A gravel bike that climbs like a dream floats over nightmarish terrain and 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 Crux takes you anywhere you can imagine at full gas. Responsive: Nimble supple and reactive. Responsive at the pedals. Supple in the saddle. With performance gravel geometry and race-influenced fit inspired by Crux’s iconic history in ‘cross. Frame Crux FACT 10r Carbon Rider First Engineered™ Threaded BB 12x142mm thru-axle flat-mount disc UDH dropout Fork S-Works FACT Carbon 12x100mm thru-axle flat-mount disc Front Brake Shimano GRX RX820 Rear Brake Shimano GRX RX820 Rear Derailleur Shimano GRX RX822-GS 12-speed Shift Levers Shimano GRX ST-RX820 Crankset Shimano GRX RX820 40t Cassette Shimano XT 12-speed 10-45t Chain Shimano XT M8100 12-speed w/ quick link Bottom Bracket Shimano Threaded BSA BB Front Wheel DT Swiss G540 rim 24mm internal width tubeless ready 24h Specialized full sealed bearing thru axle hub centerlock disc DT Swiss Champion 14G stainless steel spokes DT Swiss brass nipples Rear Wheel DT Swiss G540 rim 24mm internal width tubeless ready 24h Specialized full sealed bearing thru axle hub centerlock disc DT Swiss Champion 14G stainless steel spokes DT Swiss brass nipples Front Tyre Pathfinder 700x40 Tubeless Ready Rear Tyre Pathfinder 700x40 Tubeless Ready Inner Tubes Presta 700X32-50mm Saddle Body Geometry Power Sport steel rails SeatPost Roval Terra Carbon Seat Post 20mm Offset Handlebars Specialized Adventure Gear 118.9mm drop x 70mm reach x 12º flare Tape Supacaz Super Sticky Kush Stem 3D-forged alloy 31.8mm 7-degree rise Seat Binder Specialized Alloy 30mm Weight Size 56cm - 8.66 kg 19 lb 1.5 oz