The Crux is the lightest gravel bike in the world with the exceptional capability of massive tire clearance and performance gravel geometry Its not just the ultimate expression of gravel performance its your one-way ticket to gravel enlightenment This Crux Comp comes specd with a reliable and smooth-shifting SRAM Rival 1 hydraulic disc groupset tough DT G540 Disc wheels and 2Bliss Ready 700x38mm Pathfinder Pro tires that hookup over nasty terrain