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  • Top Fuel 9.8 GX
Overview

It's right for you if...

You’re looking for a do-it-all full suspension mountain bike that's efficient and fast, but doesn't shy away from some bigger stuff. You want the added stiffness and weight savings of a carbon frame, but don't mind saving some money on the parts.

The tech you get

A light and stiff full carbon frame, 120mm RockShox SID Select+ fork, 120mm of rear travel with a SID Luxe shock, and a SRAM GX Eagle drivetrain with an extra-low 52-tooth climbing gear. Plus, wide carbon Bontrager Line Elite 30 wheels with a 108-tooth Rapid Drive hub for instant engagement, Bontrager Line Elite Dropper, and carbon handlebars.

The final word

Top Fuel 9.8 is a ridiculously fun carbon down-country bike with upgraded parts that give you noticeable benefits on the trail, like more speed from the carbon wheels and more grip from the ultra-smooth suspension.

The Walkthrough

favorite_borderWhy you'll love it

  1. Wider Line Elite 30 wheels provide better tire support so you can run lower pressure and get more traction
  2. A sleek internal storage compartment gives you a versatile spot to stow tools and gear
  3. This bike’s killer suspension setup is both efficient and ready to party
  4. New, removable Knock Block has a bigger steering angle to keep cables and hoses safe without sacrificing turning radius
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MBUK’s Trail Bike of the Year 2022

“It’s easy to look at the bike from afar and assume this is just another downcountry rig... It wasn’t until I’d fired it over some jumps, nosed it down the odd steep chute and slung it through my test loops’ berms that I realised the Top Fuel is, simply put, a bloody brilliant trail bike.”

Read more
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"Enduro’s Best Downcountry Bike of 2022"

"Top Fuel 9.9 XX1 AXS earned top honors in Enduro’s round-up of best downcountry rippers, thanks to the bike’s clean look, practical details, and progressive suspension."

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"This is a really, really good bike"

"The Top Fuel is a very capable descender, but its well-proportioned geometry is just half the story. It manages to strike a great balance between grip, tracking, and precision. The whole bike seems to just will you on to hit things faster and with more precision."

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"This thing rips"

"The new Top Fuel is also much more composed on rough and fast descents. Thanks to the longer reach and slacker head angle, the overall wheelbase length has grown by almost 40mm. That’s huge, and it offers a vastly more planted feel at speed. Along with the big tyres and active suspension, this really is a solid little trail bike."

Read more

More options

NEW 2023
Top Fuel 9.9 XX1 AXS

Top Fuel 9.9 XX1 AXS

$11,499.99 

2022
Customize
Top Fuel 9.9 XX1 AXS

Top Fuel 9.9 XX1 AXS

$11,499.99 

NEW 2023
Customize
Top Fuel 9.9 XTR

Top Fuel 9.9 XTR

$9,549.99 

2022
Customize
Top Fuel 9.9 XTR

Top Fuel 9.9 XTR

$9,549.99 

NEW 2023
Customize
Top Fuel 9.8 GX AXS

Top Fuel 9.8 GX AXS

$7,649.99 

2022
Customize
Top Fuel 9.8 GX AXS

Top Fuel 9.8 GX AXS

$7,549.99 

NEW 2023
Customize
Top Fuel 9.8 XT

Top Fuel 9.8 XT

$7,149.99 

2022
Customize
Top Fuel 9.8 XT

Top Fuel 9.8 XT

$6,549.99 - $7,049.99 

2022-2023
Top Fuel 9.7

Top Fuel 9.7

$4,499.99 - $4,699.99 

2022
Top Fuel 8

Top Fuel 8

$3,999.99 

2022-2023
Top Fuel 7

Top Fuel 7

$3,529.99 - $3,629.99 

2022-2023
Top Fuel 5

Top Fuel 5

$2,699.99 

2023
Top Fuel C Frameset

Top Fuel C Frameset

$3,799.99 

2023
Top Fuel AL Frameset

Top Fuel AL Frameset

$2,399.99 

Get faster on the trail in a week

When it comes to being a better trail rider, practice makes perfect. Get seven tips from Pinkbike’s Christina Chappetta that will have you setting PR's and riding with more confidence in no time.

Read more

How to pack for any trail ride

Everything you need (and nothing you don’t).

Learn how

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100% S2 Standard Lens Sunglasses

100% S2 Standard Lens Sunglasses

$165.00 

Trek Voda Flow Water Bottle

Trek Voda Flow Water Bottle

$12.99 - $13.99 

Bontrager Rapid Pack Hydro

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$99.99 

Garmin Rally XC100 Single-Sensing Power Meter Pedal Set

Garmin Rally XC100 Single-Sensing Power Meter Pedal Set

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Endura Hummvee Women's Mountain Bike Short II

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Bontrager Enduro Front Fender

Bontrager Enduro Front Fender

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Bontrager Cambion Mountain Bike Shoe

Bontrager Cambion Mountain Bike Shoe

$224.99 

Quarq ShockWiz Suspension Tuning System

Quarq ShockWiz Suspension Tuning System

$354.00 

Garmin Edge 830 GPS Cycling Computer

Garmin Edge 830 GPS Cycling Computer

$399.99 

100% Celium Mountain Bike Gloves

100% Celium Mountain Bike Gloves

$29.50 

Endura Hummvee Mountain Bike Short II

Endura Hummvee Mountain Bike Short II

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Crankbrothers Candy 7 Pedal Set

Crankbrothers Candy 7 Pedal Set

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Features

Active Braking Pivot

Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

Learn more

Quick and in control

120mm of rear travel combined with progressive trail geometry gives you a fast, responsive ride that helps you keep your cool when the trail turns rowdy.

Internal Storage

Internal frame storage makes it easy to ditch the pack and still carry your ride essentials.

Watch the video

Hassle-free routing

Guided internal cable routing keeps Top Fuel quiet on the trail and maintenance a breeze.

Learn more

Will my bike have a curved top tube?

Smaller frames (XS and S) have a curved top tube. This design makes for a lower standover height, which allows shorter riders to straddle the bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don't have the same issues with standover height.

Complete Tubeless System

Complete Tubeless System

Tubeless Ready rims and tires make it easy to ditch the tubes so you get better traction, fewer flats, and less weight. You're ready to roll right out of the box with the included TLR rim strips, valves, and sealant.

Learn more

Suspension Calculator

Suspension Calculator

This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.

Learn more

Carbon Care Wheel Loyalty Program

Carbon Care Wheel Loyalty Program

Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Program. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.

Learn more

Oversized 34.9mm dropper post

Oversized 34.9mm dropper post

Bigger is better. The oversized seat tube diameter gives more support and strength for longer travel droppers, and allows for more robust, durable internals that work faster.

Threaded bottom bracket

Threaded bottom bracket

More robust than pressfit, threaded BBs hold up in nasty conditions and make servicing easier.

ISCG mounts

ISCG mounts

International Standard Chain Guide mounts offer easy chain guide installation and adjustment.

Knock Block

Knock Block

Knock Block has your frame's back when things go wrong. It prevents your handlebars from spinning all the way around in a crash, so your hoses won't get yanked, and your controls won't hit the top tube.

Learn more

Mino Link adjustable geometry

Mino Link adjustable geometry

Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.

Learn more

Specs Sizing
Geometry Service Reviews
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