It's right for you if...
You're looking for a fast mountain bike for singletrack – one that's fully capable of taking on races, marathons and competitive group rides. You want something that is reliable and fun with dependable, lightweight parts.
The tech you get
A lightweight Alpha Gold Aluminium frame, a RockShox 30 Silver 100 mm suspension fork with a lockout and an air spring that's lighter and more adjustable than a coil spring, Bontrager Kovee Tubeless Ready wheels with Boost141 hub spacing, Shimano hydraulic disc brakes and a smooth, efficient SRAM SX Eagle 1x12 drivetrain with a wide-range cassette.
The final word
With X-Caliber 8, you're getting a performance frame paired with performance parts, like a RockShox air fork and 1x SRAM Eagle drivetrain. Plus, it's equipped with durable, lightweight alloy rims that save weight and are easy to upgrade to tubeless.
favorite_borderWhy you'll love it
- It has the price of a more basic hardtail and the performance of a more expensive one
- 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 frame is fully compatible with higher-end parts, like race wheels and a dropper post, if you ever find the need to upgrade
- Smart Wheel Sizing means you'll get the fastest wheel that fits (29˝ wheels on larger frames, 27.5˝ wheels on smaller frames)
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 Aluminuum 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 at the back.
Smart Wheel Size
The right wheel size paired with your frame size gives you the perfect combination of responsiveness and control.
Locked suspension means your fork remains inactive, increasing pedalling efficiency. Perfect for extended road sections where efficiency is more important than bump absorption.
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.
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.
*spec applies to all sizes unless otherwise noted
|Frame||Alpha Gold Aluminium, tapered head tube, internal derailleur and dropper post routing, rack and kickstand mount, Boost141, 5 mm QR|
RockShox 30 Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, tapered steerer, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel
RockShox 30 Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, tapered steerer, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
M, M/L, L, XL, XXL
RockShox 30 Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, tapered steerer, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel
|Front Hub||Formula DC-20 LW, alloy, 6-bolt, 5x100 mm QR|
|Rear Hub||Formula DC-2241, alloy, 6-bolt, Shimano 8/9/10 freehub, Boost141, 5 mm QR|
|Rim||Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23 mm width, Presta valve|
Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.20"
M, M/L, L, XL, XXL
Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.20"
|Shifter||SRAM SX Eagle, 12-speed|
|Rear Derailleur||SRAM SX Eagle|
SRAM SX Eagle, GXP, 30T steel ring, Boost, 170 mm length
M, M/L, L, XL, XXL
SRAM SX Eagle, GXP, 30T steel ring, Boost, 175 mm length
|Bottom Bracket||Truvativ Powerspline, 73 mm, threaded cartridge, 118 mm spindle|
|Cassette||SRAM PG-1210 Eagle, 11-50, 12-speed|
|Chain||SRAM SX Eagle, 12-speed|
|Pedal||VP-536 nylon platform|
|Saddle||Bontrager Arvada, steel rails, 138 mm width|
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
M/L, L, XL, XXL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
S, M, M/L, L, XL, XXL
Bontrager alloy, 31.8 mm, 5 mm rise, 720 mm width
|Grips||Bontrager XR Trail Comp, nylon lock-on|
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length
|Headset||Semi-integrated, cartridge bearing, 1-1/8" top, 1.5" bottom|
|Brake||Shimano MT200 hydraulic disc|
- M - 13.44 kg / 29.63 lbs (with tubes)
- Weight limit
- This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Sizing & fit
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
137.0 - 155.0 cm
4'5.9" - 5'1.0"
64.0 - 73.0 cm
25.2" - 28.7"
153.0 - 162.0 cm
5'0.2" - 5'3.8"
72.0 - 76.0 cm
28.3" - 29.9"
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
170.0 - 179.0 cm
5'6.9" - 5'10.5"
80.0 - 84.0 cm
31.5" - 33.1"
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
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 stated.
|Frame size number||Frame size letter||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|