Shop the 2025 Trek Top Fuel 9.8 GX AXS Gen 4 Lunar Silver for sale in South Africa at Biket — the official Trek Bikes online store. Premium carbon trail MTB with 120/130mm RockShox suspension and SRAM GX AXS wireless drivetrain. Order online today with fast free nationwide delivery in South Africa.

OVERVIEW

The Top Fuel 9.8 GX AXS Gen 4 is a lightweight carbon trail bike built to rip up climbs and stay playful on descents. It gives you the confidence you want through roots and rocks, thanks to a 120 mm/130 mm RockShox suspension package with a Pike Select+ fork and Deluxe Ultimate shock. Plus, you can shift easy even under load with a SRAM GX Eagle AXS wireless transmission.

It's right for you if...

You're after a carbon trail bike that keeps weight to a minimum without compromising on capability. You like to ride everything – long alpine climbs, rooty aspen slalom, fast XC singletrack and you want a bike that can keep up on the ups and hold its own on the downs. Keeping things light with a carbon frame is important to you, and you want the smooth-shifting performance of a direct mount transmission.

The tech you get

An OCLV Mountain Carbon frame with a 4-way Mino Link lower shock mount for tweaking geometry and suspension leverage rate. A 130 mm RockShox Pike Select+ fork with DebonAir spring, and Charger 3.1 RC2 damper, plus 120 mm of rear travel from a RockShox Deluxe Ultimate RCT shock. A SRAM GX Eagle wireless transmission, SRAM Level Bronze 4-piston hydraulic brakes, Bontrager Line dropper post and tubeless-ready Bontrager Line Comp 30 wheels.

The final word

If you're after a light carbon trail bike that balances a playful and capable ride, reach for the Top Fuel 9.8 GX AXS Gen 4. Its ultra-lightweight frame pairs with a 4-way Mino Link lower suspension mount for taking control of your geometry and suspension feel. Plus, you get a wireless SRAM GX AXS transmission and sweet RockShox suspension package.

Why you'll love it

The Top Fuel Gen 4 delivers with an intensely lightweight build, improved in-frame storage and more adjustability for all kinds of rides and riders
With 120 mm rear and 130 mm front RockShox suspension, it delivers a well-balanced ride that stays efficient on the ups and playful on descents
The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
In-frame storage with an improved BITS bag system makes it easy to stash tools, tubes and snacks
It's more upgrade-ready than ever, with room for bigger 140 mm forks and longer-stroke shocks for up to 130 mm of rear travel, plus room for extra-long dropper posts.

SPECS

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.