Trek X-Caliber 8

Trek X-Caliber 8
  • Color: Trek Black/Firebrand
  • Color: Powder Blue/Viper Red
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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!

Trek's G2 Geometry (version 2 of Gary Fisher's Genesis Geometry) delivers the ultimate ride for every trail. Genesis earned rave reviews for awesome handling on climbs and descents thanks to a long top tube paired with a short stem that moves the front wheel forward for top-notch confidence and control, while short chainstays add phenomenal traction. G2 Geometry takes these handling traits to the next level by boosting control on tight singletrack and technical climbs, too. This is accomplished by increasing the amount of fork offset (reducing trail), which makes G2 bikes steer more quickly, and by shortening the reach, which puts more weight on the front wheel for even better control and confidence. The two animations above showcase how G2 Geometry provides the perfect ride.


Frame Trek Alpha Gold Series aluminum
Fork RockShox Recon Silver, 100mm-travel
Rims/Wheels Bontrager Mustang Elite tubeless ready
Hubs Formula
Tires Bontrager XR2, 29/27.5 x 2.2
Crankset SRAM S100
Chainrings 36/22
Front Derailleur SRAM X7
Rear Derailleur SRAM GX
Rear Cogs SRAM, 10-speed: 11-36
Shifters SRAM X5
Handlebars Bontrager
Tape/Grips Bontrager Race
Stem Bontrager Elite
Brake Levers Shimano
Brakes Shimano M355 disc
Pedals Wellgo nylon platform
Saddle Bontrager Evoke 1.5
Seatpost Bontrager

* Subject to change without notice.

Part Numbers

Option UPC MPN
Trek Black/Firebrand / 13.5-inch (27.5 wheels) 601479321728 522096
Trek Black/Firebrand / 15.5-inch (27.5 wheels) 601479321735 522097
Trek Black/Firebrand / 17.5-inch (29 wheels) 601479321759 522099
Trek Black/Firebrand / 18.5-inch (29 wheels) 601479321766 522100
Trek Black/Firebrand / 19.5-inch (29 wheels) 601479321773 522101
Trek Black/Firebrand / 21.5-inch (29 wheels) 601479321780 522102
Trek Black/Firebrand / 23-inch (29 wheels) 601479321797 522103
Powder Blue/Viper Red / 13.5-inch (27.5 wheels) 601479321803 522104
Powder Blue/Viper Red / 15.5-inch (27.5 wheels) 601479321810 522105
Powder Blue/Viper Red / 17.5-inch (29 wheels) 601479321834 522107
Powder Blue/Viper Red / 18.5-inch (29 wheels) 601479321841 522108
Powder Blue/Viper Red / 19.5-inch (29 wheels) 601479321858 522109
Powder Blue/Viper Red / 21.5-inch (29 wheels) 601479321865 522110
Powder Blue/Viper Red / 23-inch (29 wheels) 601479321872 522111