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NEW 2020

X-Caliber 8

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$1,499.99 Model 28064

X-Caliber 8 is a cross country mountain bike made for fast laps and long days on the trail. It's built with special attention to value and the parts that make the biggest difference in performance. A 1x SRAM drivetrain, RockShox fork, and hydraulic disc brakes make it a great choice for new mountain bikers and XC racers searching for fast, fun, singletrack adventure.

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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 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, 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

  1. It has the price of a more basic hardtail and the performance of a more expensive one
  2. 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
  3. The frame is fully compatible with higher-end parts, like race wheels and a dropper post, if you ever find the need to upgrade
  4. Smart Wheel Sizing means you'll get the fastest wheel that fits (29˝ wheels on larger frames, 27.5˝ wheels on smaller frames)


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.

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, rack & kickstand mount, Boost141, 5mm QR
*Fork Size: XS
RockShox 30 Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, tapered steerer, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel
Size: S
RockShox 30 Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, tapered steerer, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel
Size: M, M/L, L, XL, XXL
RockShox 30 Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, tapered steerer, 46mm offset for 29'' wheel, 100mm QR, 100mm travel
Wheels
Front Hub Formula DC-20 LW, alloy, 6-bolt, 5x100mm QR
Rear Hub Formula DC-2241, alloy, 6-bolt, Shimano 8/9/10 freehub, Boost141, 5mm QR
*Rim Size: XS, S, M, M/L, L, XL, XXL
Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, presta valve
Size: XS, S, M, M/L, L, XL, XXL
Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23mm width, presta valve
*Tire Size: XS, S
Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.20''
Size: M, M/L, L, XL, XXL
Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.20''
Drivetrain
Shifter SRAM SX Eagle, 12 speed
Rear Derailleur SRAM SX Eagle
*Crank Size: XS, S
SRAM SX Eagle, GXP, 30T steel ring, Boost, 170mm length
Size: M, M/L, L, XL, XXL
SRAM SX Eagle, GXP, 30T steel ring, Boost, 175mm length
Bottom Bracket Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle
Cassette SRAM PG-1210 Eagle, 11-50, 12 speed
Chain SRAM SX Eagle, 12 speed
Pedal VP-536 nylon platform
Components
Saddle Bontrager Arvada, steel rails, 138mm width
*Seatpost Size: XS, S
Bontrager alloy, 31.6mm, 12mm offset, 330mm length
Size: M
Bontrager alloy, 31.6mm, 12mm offset, 360mm length
Size: M/L, L, XL, XXL
Bontrager alloy, 31.6mm, 12mm offset, 400mm length
*Handlebar Size: XS
Bontrager alloy, 31.8mm, 5mm rise, 690mm width
Size: S, M, M/L, L, XL, XXL
Bontrager alloy, 31.8mm, 5mm rise, 720mm width
Grips Bontrager XR Trail Comp, nylon lock-on
*Stem Size: XS, 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, XXL
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length
Headset Semi-integrated, cartridge bearing, 1-1/8'' top, 1.5'' bottom
Brake Shimano MT200 hydraulic disc



  • Weight

    Weight
    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).
  • We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
    Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

    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 authorized Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

     

    Rider Height

    Inseam

    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
    13.5 XS 34.3 73.5° 73.5° 9.0 69.3° 54.3 29.2 5.8 42.5 4.2 8.8 103.6 69.8 37.6 56.5
    15.5 S 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 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 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 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 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 62.6
    23.0 XXL 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 62.6

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