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 Expert comes spec'd with Shimano’s GRX Di2 1x12 800 Series hydraulic disc groupset with wireless shifting, lightweight and durable Roval Terra C Disc wheels, and 2Bliss Ready, 700x40mm Pathfinder tires that hookup over nasty terrain.