The Trek X-Caliber 8 Mountain Bike is designed to perform at a high level in any cross-country setting but does so with high affordability. Combining a mixture of singletrack-inspired traits with dependable and lightweight components, the X-Caliber 8 is the perfect partner to take on any race, marathon or fast-paced group ride.

    The Alpha Gold aluminium frame provides a solid core to the ride by being light, reactive to power input and robust for the roughest of trails. The frame is complemented by the enhanced control and line accuracy provided by the RockShox Judy SL suspension fork and its plush levels of cushioning. This fork also features a neat lockout feature for increased efficiency across smoother terrain or when climbing. The chassis is infused with composed but reactive handling thanks to its singletrack-themed geometry.

    Durable but light-alloy wheels afford peace of mind across harsh surfaces but also facilitate frequent changes of pace. The Smart Wheel Sizing concept ensures that the ideal size of wheels, either 27.5″ or 29″, are mated to the correct frame size, to award a balanced ride sensation regardless of the rider’s stature. The wheel rims are compatible with tubeless-ready tyres so that this upgrade can be made easily at a later date.

    Gear changes are catered for by the smooth and reliable SRAM SX Eagle setup, with its 1×12-speed configuration providing a vast range of ratios for any topography. Hydraulic disc brakes complete the build by contributing modulated and reliable stopping power in any weather conditions.


    • A high performing but affordable cross-country mountain bike perfect for races, marathons and fast group rides Alpha Gold Aluminum frame is light, responsive and robust
    • RockShox Judy SL, air-sprung suspension fork with lockout feature
    • Composed geometry with Smart Wheel Sizing to ensure balanced handling across sizes
    • Durable but light-alloy wheels are tubeless tyre ready
    • Smooth and efficient SRAM SX Eagle 1×12 drivetrain
    • Hydraulic disc brakes are powerful and accurate


    Frame Trek Alpha Gold Aluminium, tapered head tube, internal derailleur and dropper post routing, rack and kickstand mount, Boost141, 5mm QR
    Fork RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, Boost110, 15mm Maxle Stealth (sizes S, M, M/L, L, XL, XXL), 15mm Maxle Lite (size XS), travel 100mm (sizes S, M, M/L, L, XL, XXL) / 80mm (size XS), 42mm offset
    Headset Semi-integrated, loose ball bearing, 1-1/8″ top, 1.5″ bottom
    Bottom Bracket Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle
    Stem Bontrager Elite, 31.8mm, Blendr-compatible, 7-degree
    Handlebar Bontrager alloy, 31.8mm, 5mm rise
    Front Brake Shimano MT200 hydraulic disc with Shimano RT26, 6-bolt rotor
    Rear Brake Shimano MT200 hydraulic disc with Shimano RT26, 6-bolt rotor
    Brake Levers Shimano hydraulic
    Front Derailleur NA
    Rear Derailleur SRAM SX Eagle, 12-speed
    Shift Levers SRAM SX Eagle, 12-speed
    Chain SRAM SX Eagle, 12-speed
    Cassette SRAM PG-1210 Eagle, 11-50, 12-speed
    Crankset SRAM SX Eagle, GXP, 30T steel ring, Boost
    Front Wheel Bontrager Kovee, double-wall, tubeless-ready, 28-hole, 23mm width, Presta valve rim, Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle hub, 14g stainless steel, black spokes
    Rear Wheel Bontrager Kovee, double-wall, tubeless-ready, 32-hole, 23mm width, Presta valve rim, Formula DCL-141Q, sealed bearing, 6-bolt, Shimano 10 freehub, Boost141, 5mm QR hub, 14g stainless steel, black spokes
    Front Tyre Bontrager XR3 Comp, wire bead, 30 TPI, 29×2.20” (Sizes M, M/L, L, XL, XXL) / 27.5×2.20’’ (Sizes XS, S), clincher
    Rear Tyre Bontrager XR3 Comp, wire bead, 30 TPI, 29×2.20” (Sizes M, M/L, L, XL, XXL) / 27.5×2.20’’ (Sizes XS, S), clincher
    Saddle Bontrager Arvada, steel rails, 138mm width
    Seatpost Bontrager alloy, 31.6mm, 12mm offset (Sizes XS/S
    Pedals VP-536 nylon platform
    Claimed Manufacturers Weight 13.8kg / 30.42lbs (size M with inner tubes installed)
    Weight Limit 136kg / 300lbs (combined weight of bicycle, rider and luggage)

    L, ML, S, SM, XL, XXL


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