We'll take care of you. Period.
It's our mission to provide you with world-class hospitality every time you visit us online or in-store. We're always here to help you. It's the Trek way.
Free shipping and professional assembly
All bikes ordered online ship for free to your local Trek shop for professional assembly. Participating retailers will even deliver your new ride to your doorstep!
30 Day Unconditional Guarantee
If for any reason you aren't 100% happy with your trekbikes.com purchase, you can return it in like new condition within 30 days - no questions asked.
Learn more
More options
Great Ride Series: Lily & Emerson
The story of two NICA student athletes and BFFs.
Read more
Product features
Built for speed
X-Caliber is a classic XC hardtail with quick-handling geometry, weight-conscious parts, and just enough suspension to take the edge off bumps. These models are built for efficiency, making them great for racers or anyone else who wants to cover more ground in less time.
High tech frame
The Alpha Gold Aluminum frame is packed with features that make your ride better. A tapered head tube gives you more precise, confident handling on the front end, while Boost 141 rear hub spacing gives you shorter chainstays for more nimble handling out back.
Shimano XT
Shimano XT is the original mountain bike groupset and trusted by generations of mountain bikers around the world. Whatever the trail, wherever you ride, XT is your solution for mountain biking today. Reliable shifting. Superior braking. Intuitive maintenance. XT is the high performance workhorse you can count on.
Upgrade your pedals and love your bike more
Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.
See the guide
Smart Wheel Size
The right wheel size paired with your frame size gives you the perfect combination of responsiveness and control.
Suspension lockout
Locked suspension means your fork remains inactive, increasing pedaling efficiency. Perfect for extended road sections where efficiency is more important than bump absorption.
Internal cable routing
We route shift and brake cables through the frame to keep things clean and simple. And it looks great, too.
Blendr-compatible stem
Bontrager Blendr stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.
Learn more
Rack mounts
Going for a long ride? Rack mounts make carrying accessories a breeze.
Rear kickstand mount
Chainstay mounts make it easy to install a rear kickstand that stays out of your way and supports bikes of all sizes. No more laying or leaning.
Internal dropper compatible
Internal routing ports make it easy to add a dropper post upgrade that lets you lower your saddle on the fly so it's out of your way for tricky sections of trail.
| Frame | Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, rack & kickstand mount, Boost141, 5mm QR |
|---|---|
| *Fork | Size:S RockShox Recon Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 37mm offset, Boost110, 15mm Maxle Stealth, 100mm travel |
| Size:M , ML , L , XL , XXL RockShox Recon Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, 15mm Maxle Stealth, 100mm travel | |
| Max compatible fork travel | 120mm, XS: 100mm |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle |
|---|---|
| Hub rear | Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost141, 5mm QR |
| *Rim | Size:S , M , ML , L , XL , XXL Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve |
| Size:S , M , ML , L , XL , XXL Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23mm width, Presta valve | |
| *Tire | Size:S Maxxis Ardent Race, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.35'' |
| Size:M , ML , L , XL , XXL Maxxis Ardent Race, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.35'' | |
| Tire part | Bontrager TLR sealant, 6oz |
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 27.5x2.80" or 29x2.40", Fork: See manufacturer |
| Shifter | Shimano SLX M7100, 12 speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage |
| *Crank | Size:S , M Shimano MT611, 30T steel ring, alloy spider, 52mm chainline, 170mm length |
| Size:ML , L , XL , XXL Shimano MT611, 30T steel ring, alloy spider, 52mm chainline, 175mm length | |
| Bottom bracket | Shimano SM-BB52, 73mm, threaded external bearing |
| Cassette | Shimano SLX M7100, 10-51T, 12 speed |
| Chain | Shimano SLX M7100, 12 speed |
| Pedal | VP-536 nylon platform |
| Max chainring size | 1x: 32T |
| Saddle | Bontrager Arvada, steel rails, 138mm width |
|---|---|
| *Seatpost | Size:S , M TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length |
| Size:ML , L , XL , XXL TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length | |
| *Handlebar | Size:S , M Bontrager alloy, 31.8mm, 5mm rise, 720mm width |
| Size:ML , L , XL , XXL Bontrager alloy, 31.8mm, 15mm rise, 750mm width | |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem | Size:S Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 60mm length |
| Size:M , ML Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length | |
| Size:L Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length | |
| Size:XL , XXL Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length | |
| Headset | Semi-integrated, sealed cartridge bearing, alloy cups, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano hydraulic disc, MT4100 lever, MT410 caliper |
| *Brake rotor | Size:S , M , ML , L , XL , XXL Shimano RT56, 6-bolt, 180mm |
| Size:S , M , ML , L , XL , XXL Shimano RT56, 6-bolt, 160mm |
| Weight | M - 12.75 kg / 28.11 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
How tall are you?
To measure your height, stand straight up, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.
What is your inseam?
How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inseam measurement. Your inseam is very important to your final bike size so please measure carefully.
