Jump front wheel-first into the off-road world aboard Trek's X-Caliber 8. This sleek dirt-worthy bike starts with a lightweight Gold aluminum frame with Gary Fisher's proven G2 geometry. Complementing the sublime ride is a RockShox fork that gives you 100mm of travel to add even more cush and steering confidence to the big steamrolling wheels. Proven parts hang off the sweet frame and fork with tubeless-ready wheels with Shimano disc brakes. And, you also get the solid performance of SRAM shifting and the quality of Bontrager controls. And with Trek's Smart Wheel sizing, you're riding the fastest wheel size with the best possible fit. It all adds up to a ride more than ready for the off-road world!