Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
Cyclescheme can save you up to 39% on a bike and accessories. Visit our Cycle to Work Scheme page to learn more and claim.
Trek X-Caliber 8 Mountain Bike 2021
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 1x12-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 1x12 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|
|Rear Derailleur||SRAM SX Eagle, 12-speed|
|Shift Levers||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||Rim Bontrager Kovee, double-wall, tubeless-ready, 28-hole, 23mm width, Presta valve / Hub Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle / Spokes 14g stainless steel, black|
|Rear Wheel||Rim Bontrager Kovee, double-wall, tubeless-ready, 32-hole, 23mm width, Presta valve / Hub Formula DCL-141Q, sealed bearing, 6-bolt, Shimano 10 freehub, Boost141, 5mm QR / Spokes 14g stainless steel, black|
|Front Tyre||Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.20” (Sizes M, M/L, L, XL, XXL) / 27.5x2.20’' (Sizes XS, S), clincher|
|Rear Tyre||Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.20” (Sizes M, M/L, L, XL, XXL) / 27.5x2.20’' (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)|
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if specified), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.
Trek X-Caliber 8 Mountain Bike 2021 Sizing
Forgotten Your Password?
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.