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It's right for you if...
You're new to mountain biking and want a high-value bike that's perfect for local XC trails and even racing. You want to invest in the parts that make a difference in performance—frame, suspension, and brakes—and want a bike you won't immediately outgrow as your skills advance.
The tech you get
A lightweight Alpha Gold Aluminum frame, a RockShox 30 Silver 100mm suspension fork with a lockout and an air spring that's lighter and more adjustable than a coil spring, a dependable Shimano 1x10 drivetrain with a wide range of gears for easier climbing, and tubeless ready wheels with wider Boost141 hubs for increased wheel strength and better tire clearance.
The final word
X-Caliber 7 is a great cross country mountain bike at a great value. It has the same features found on higher-end bikes—like internal cable routing, dropper post compatibility, a tapered head tube, and Boost hub spacing—all on a platform that's easy to upgrade down the line.
The Walkthrough
favorite_borderWhy you'll love it
- It gets you into the world of cross country riding and racing at a great price, and it's a mountain bike that can grow with you as your skills advance
- The sleek internal cable routing gives you clean looks, protects your cables, and makes it easy to upgrade to a dropper post for even more capability
- Smart Wheel Sizing means you'll get the fastest wheel that fits (29˝ wheels on larger frames, 27.5˝ wheels on smaller frames)
- The RockShox air fork has a rebound adjust and can be tuned to the rider’s weight, and it’s way higher quality than what you’d normally get on an MTB at this price
- The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
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.
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 stem
Bontrager 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.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, rack & kickstand mount, Boost141, 5mm QR |
|---|---|
| *Fork |
Size:
S RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, 42mm offset, 100x5mm QR, 100mm travel |
|
Size:
M, M/L, L, XL RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, 46mm offset, 100x5mm QR, 100mm travel |
| Front hub | Formula DC-20, alloy, 6-bolt, 100mm ThruSkew |
|---|---|
| Rear hub | Formula DC-2241, alloy, 6-bolt, Shimano 8/9/10 freehub, Boost141, 5mm QR |
| *Rim |
Size:
S, M, M/L, L, XL Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, presta valve |
|
Size:
S, M, M/L, L, XL Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23mm width, presta valve |
|
| Spokes | 14g, stainless |
| *Tire |
Size:
S Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20'' |
|
Size:
M, M/L, L, XL Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20'' |
| Shifter | Shimano Deore M4100, 10 speed |
|---|---|
| Rear derailleur | Shimano Deore M5120, long cage |
| *Crank |
Size:
S, M Shimano Deore M5100, 30T steel ring, Boost (52mm chainline), 170mm length |
|
Size:
M/L, L, XL Shimano Deore M5100, 30T steel ring, Boost (52mm chainline), 175mm length |
|
| Cassette | Shimano Deore M4100, 11-46, 10 speed |
| Chain | KMC X10, 10 speed |
| Pedal | VP-536 nylon platform |
| Saddle | Bontrager Arvada, steel rails, 138mm width |
|---|---|
| *Seatpost |
Size:
S Bontrager alloy, 31.6mm, 12mm offset, 330mm length |
|
Size:
M Bontrager alloy, 31.6mm, 12mm offset, 360mm length |
|
|
Size:
M/L, L, XL Bontrager alloy, 31.6mm, 12mm offset, 400mm length |
|
| Handlebar | Bontrager alloy, 31.8mm, 5mm rise, 720mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem |
Size:
S Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 60mm length |
|
Size:
M Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length |
|
|
Size:
M/L, L Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length |
|
|
Size:
XL Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
|
| Headset | Semi-integrated, loose ball bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano MT200 hydraulic disc |
| *Brake rotor |
Size:
S, M, M/L, L, XL Shimano RT26, 160mm, 6-bolt |
|
Size:
L, XL Shimano RT26, 180mm, 6-bolt |
| Weight | M - 13.39 kg / 29.53 lbs (with tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
Rider Height
Inseam
XS
137.0 - 155.0 cm
4'5.9" - 5'1.0"
64.0 - 73.0 cm
25.2" - 28.7"
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
M/L
165.5 - 179.0 cm
5'5.2" - 5'10.5"
77.0 - 84.0 cm
30.3" - 33.1"
L
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
2XL
195.0 - 203.0 cm
6'4.8" - 6'7.9"
92.0 - 95.0 cm
36.2" - 37.4"
All measurements provided in cm unless otherwise noted.
| Frame size number | Frame size letter | Wheel size | A — Seat tube | B — Seat tube angle | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.5 | XS | 27.5" | 34.3 | 73.5° | 73.5° | 9.0 | 69.3° | 54.4 | 29.2 | 5.8 | 42.5 | 4.2 | 8.8 | 103.6 | 69.8 | 37.6 | 56.5 |
| 15.5 | S | 27.5" | 36.8 | 73.5° | 73.5° | 9.0 | 69.3° | 55.5 | 30.2 | 4.8 | 42.5 | 4.2 | 8.8 | 105.3 | 72.4 | 38.5 | 57.4 |
| 17.5 | M | 29" | 41.9 | 71.9° | 73.0° | 9.0 | 69.5° | 60.1 | 31.1 | 5.8 | 43.8 | 4.2 | 9.4 | 110.9 | 74.8 | 41.8 | 59.8 |
| 18.5 | ML | 29" | 44.4 | 71.9° | 73.0° | 9.0 | 69.5° | 61.7 | 31.0 | 5.8 | 43.8 | 4.2 | 9.4 | 112.5 | 75.7 | 43.4 | 59.8 |
| 19.5 | L | 29" | 47.0 | 71.9° | 73.0° | 10.0 | 69.5° | 63.7 | 31.0 | 5.8 | 43.8 | 4.2 | 9.4 | 114.5 | 75.7 | 45.1 | 60.8 |
| 21.5 | XL | 29" | 52.1 | 71.9° | 73.0° | 12.0 | 69.5° | 65.8 | 31.0 | 5.8 | 43.8 | 4.2 | 9.4 | 116.7 | 76.8 | 46.6 | 62.7 |
| 23.0 | XXL | 29" | 55.9 | 71.9° | 73.0° | 12.0 | 69.5° | 67.2 | 31.1 | 5.8 | 43.8 | 4.2 | 9.4 | 118.1 | 80.4 | 48.0 | 62.7 |