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 Top Fuel 9.9 XX1 AXS Mountain Bike 2021
Spec'd out with serious components that are race-ready and just eat up rough terrain, the Trek Top Fuel 9.9 XX1 AXS Mountain Bike features a full carbon frame with 115mm of travel, and 120mm of plush RockShox suspension in the fork. This is a bike that delivers both comfort over long distances and confidence when the pace ramps up, thanks to a slacker head tube angle, which also lends greater room for error should concentration begin to wane on long days in the saddle. The Mino Link is a handy addition to this capable bike, enabling the rider to switch between aggressive and responsive geometry, or geometry that's more trail specific with a lowered bottom bracket and slightly slacker head angle.
Get the saddle out of the way quickly thanks to the RockShox Reverb AXS dropper seatpost, ideal when descending or handling sweeping corners, and control this wirelessly through the SRAM AXS system. Shifting is also wireless, snappy, and quiet, with a wide range of gearing options to keep grinding at bay when gradients ramp up. Carbon bars, shift levers and wheels keep weight low, and Bontrager Kovee Pro 30 wheels can be run tubeless to eliminate pinch flats at lower pressures.
The full carbon frame gives you a light, responsive ride
This short-travel trail bike gives you a suspension set-up that’s capable in several MTB disciplines, and especially suited to endurance events
Bontrager DropLock's shifter-style lever lets you easily lock out both front and rear shocks at the same time for added sprinting or climbing efficiency
Wider Kovee Pro 30 wheels provide better tyre support so you can run lower pressure and get more traction
Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride.
You get a Straight Shot Downtube for extra-stiff, responsive handling without added weight and a Knock Block headset that protects against spinning bars and fork crowns
|Frame||Trek OCLV Mountain Carbon main frame and stays, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel|
|Fork||RockShox SID Ultimate, DebonAir spring, Charger 2 RC2 damper, tapered steerer, 42mm offset, Boost110, 15mm Maxle Stealth, 120mm travel|
|Rear Shock||RockShox SIDLuxe Ultimate, DebonAir spring, Ultimate RL damper, Bontrager DropLock remote, 190x45mm|
|Headset||Trek Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom|
|Stem||Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree|
|Handlebar||Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width|
|Grips||Bontrager XR Trail Elite, alloy lock-on|
|Front Brake||SRAM G2 Ultimate hydraulic disc|
|Rear Brake||SRAM G2 Ultimate hydraulic disc|
|Brake Levers||SRAM G2 carbon levers|
|Rear Derailleur||SRAM XX1 Eagle AXS|
|Shift Levers||SRAM Eagle AXS, wireless, 12-speed|
|Chain||SRAM XX1 Eagle, 12-speed|
|Cassette||SRAM XG-1299 Eagle, 10-50, 12-speed|
|Crankset||SRAM XX1 Eagle AXS, DUB, 32T alloy ring, Boost|
|Front Wheel||Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110 front|
|Rear Wheel||Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost148 rear|
|Front Tyre||Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40" clincher|
|Rear Tyre||Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40" clincher|
|Saddle||Bontrager Arvada, austenite rails, 138mm width|
|Seatpost||RockShox Reverb AXS, wireless, 31.6mm|
|Pedals||Available to be purchased separately|
|Claimed Manufacturers Weight||Size M - 11.07kg / 24.40lbs (with TLR sealant, no tubes)|
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 Top Fuel 9.9 XX1 AXS 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.