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.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Trek Top Fuel 9.8 GX Mountain Bike 2021
Crafted from stiff, light OCLV Carbon and premium performance parts, the Trek Top Fuel 9.8 GX Mountain Bike is rapid and raises a smile on endurance rides or more technical trails. The slack head tube makes for a more planted feel and heightened confidence at speed, while the Mino Link means the geometry can be adjusted, even mid-ride; drop the bottom bracket and slacken the head angle by half a degree, or keep it responsive in a more aggressive position. Front and rear RockShox suspension are ultra-smooth, soaking up rough terrain and keeping fatigue at bay. For explosive sprints and challenging climbs, the front and rear shocks can be locked out remotely, and the Bontrager Line Elite Dropper seatpost gets the saddle out of the way in an instant for descents or sweeping corners.
The carbon Bontrager Kovee Elite 30 wheels save on weight and can be run tubeless to avoid punctures at low pressures, whilst also providing improved traction and grip. Mid-level SRAM GX Eagle 12-speed components are consistent, lightweight and durable - shifting reliably and with an array of gearing options to suit undulating gradients.
Highlights
- The full OCLV 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
Technical Specification
| 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 Select+, DebonAir spring, Charger 2 RL damper, Bontrager DropLock remote, tapered steerer, 44mm 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 RS hydraulic disc |
| Rear Brake | SRAM G2 RS hydraulic disc |
| Brake Levers | SRAM G2 RS |
| Rear Derailleur | SRAM GX Eagle |
| Shift Levers | SRAM GX Eagle, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Cassette | SRAM Eagle XG-1275, 12-speed |
| Crankset | SRAM GX 7K Eagle, DUB, 32T alloy ring, Boost |
| Front Wheel | Bontrager Kovee Elite 30 carbon, Tubeless Ready, 6-bolt, Boost110 front |
| Rear Wheel | Bontrager Kovee Elite 30 carbon, Tubeless Ready, 6-bolt, Boost 148 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 Montrose Elite, titanium rails, 138mm width |
| Seatpost | Bontrager Line Elite Dropper, internal routing, 31.6mm |
| Pedals | Available to be purchased separately |
| Claimed Manufacturers Weight | Size M - 11.74kg / 25.88lbs (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 included), 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. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
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