FULL OF FAST, BUILT TO LAST
Caution: X-Caliber will get you hooked. It packs all of Trek’s XC race hardtail experience into a light, fast, race-ready bike that pairs the right wheel size with each frame size.
Nothing beats the efficiency, simplicity, and straight-up fun of an X-Cal hardtail in 29er or 27.5". Great for XC racing, marathons, 24-hour racing, or simply shredding singletrack.
2x drivetrain options, suspension lockout, Tubeless Ready rims, and Shimano hydraulic disc brakes mean you’re ready to roll right from go.
Light, precise race frame
Highly refined Alpha Aluminum frame uses sophisticated tube shaping to minimize weight and maximize race-day performance.
Smart Wheel Size
One wheel size does not fit all. We put the right size wheel on every frame: 27.5” on 15.5” frames, 29er on 17.5” and up. Everyone wins.
More sizes fit more riders
Extended size range includes the small 13.5˝, the additional mid-range 18.5˝, and the extra-large 23˝ to better fit more riders.