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 Shimano 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.
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 aluminum frame, a RockShox Judy SL 100mm suspension fork with a TurnKey lockout and an air spring that's lighter and more adjustable than a coil spring, tubeless ready wheels with Boost141 hub spacing, and a Shimano Deore 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 Shimano Deore drivetrain. Plus, it's equipped with durable, lightweight alloy rims that save weight and are easy to upgrade to tubeless.
Why you'll love it
- It has the price of a more basic hardtail, but the parts and performance of a more expensive one
- 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)
- The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
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: XS RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Lite, 80 mm travel |
| Size: S RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, Boost110, 15 mm Maxle Lite, 100 mm travel |
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| Size: M, M/L, L, XL, XXL RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, Boost110, 15 mm Maxle Stealth, 100 mm travel |
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| Max compatible fork travel | 120mm (XS: 100mm) |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Hub rear | Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost141, 5mm QR |
| Rim | Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve |
| Spokes | 14 g stainless steel |
| *Tire | Size: XS, S Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60 tpi, 27.5x2.35" |
| Size: M, M/L, L, XL, XXL Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60 tpi, 29x2.35" |
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| Tire part | Bontrager TLR sealant, 180 ml/6 oz |
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 27.5x2.80" or 29x2.40" Fork: See manufacturer |
| Shifter | Shimano Deore M6100, 12-speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage, 51T max cog |
| *Crank | Size: XS, S, M Shimano MT511, 30T steel ring, Boost, 170 mm length |
| Size: M/L, L, XL, XXL Shimano MT511, 30T steel ring, Boost, 175 mm length |
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| Bottom bracket | Shimano SM-BB52, 73mm, threaded external bearing |
| Cassette | Shimano Deore M6100, 10-51, 12 speed |
| Chain | Shimano Deore M6100, 12-speed |
| Pedal | VP-536 nylon platform |
| Max chainring size | 32T |
| Saddle | Bontrager Arvada, steel rails, 138 mm width |
|---|---|
| *Seatpost | Size: XS, S Bontrager alloy, 31.6mm, 12mm offset, 330mm length |
| Size: M Bontrager alloy, 31.6mm, 12mm offset, 360mm length |
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| Size: M/L, L, XL, XXL Bontrager alloy, 31.6mm, 12mm offset, 400mm length |
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| *Handlebar | Size: XS Bontrager alloy, 31.8mm, 5mm rise, 690mm width |
| Size: S, M Bontrager alloy, 31.8mm, 5mm rise, 720mm width |
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| Size: M/L, L, XL, XXL Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
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| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem | Size: XS, S Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length |
| Size: M, M/L Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length |
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| Size: L Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length |
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| Size: XL, XXL Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length |
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| Headset | Semi-integrated, loose ball bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | Shimano MT200 hydraulic disc |
| *Brake rotor | Size: XS, S, M, M/L, L, XL, XXL Shimano RT26, 6-bolt,160 mm |
| Size: L, XL, XXL Shimano RT26, 6-bolt,180 mm |
| Weight | M - 13.05 kg / 28.78 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |