TREK TOP FUEL 9.9 XO GEN 4 AXS AXINITE 2025

TREK TOP FUEL 9.9 XO GEN 4 AXS AXINITE 2025

TOP FUEL XO AXINITE – The Top Fuel 9.9 X0 AXS Gen 4 is an ultra-light and capable carbon trail bike that’s built for soaring up climbs and rallying over miles of singletrack. This top-level build delivers the performance you want, with a RockShox Ultimate suspension package (120 mm/130 mm) and SRAM’s wireless X0 AXS transmission that shifts smooth and easy, especially under load. It’s topped off with carbon wheels to keep your ride light from top to bottom.

It’s right for you if…

You want the best carbon trail bike with all-mountain capability, climbing efficiency and components to match. You don’t mind spending a little extra to get the ultra-clean shifting of SRAM’s X0 AXS wireless transmission and an upgraded RockShox Ultimate suspension package is a must.

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 Ultimate fork with DebonAir spring and Charger 3.1 RC2 damper, plus 120 mm of rear travel from a RockShox Deluxe Ultimate RCT shock. A wireless SRAM X0 AXS transmission, SRAM Level Silver Stealth 4-piston hydraulic brakes, RockShox Reverb AXS dropper post and tubeless-ready Bontrager Line Pro 30 carbon wheels.

The final word

When you’re after the best all-mountain carbon ride, reach for Top Fuel X0 AXS 9.9 Gen 4. With an ultra-light frame, carbon wheels and SRAM X0 wireless transmission, it delivers everything you want on dirt. Plus, it’s built with a 4-way Mino Link lower suspension mount for taking control of your geometry and suspension feel.

Why you’ll love it

1. 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
2. With 120 mm rear and 130 mm front RockShox Ultimate suspension, it delivers a well-balanced ride that stays efficient on the ups and playful on descents
3. The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
4. In-frame storage with an improved BITS bag system makes it easy to stash tools, tubes and snacks
5. 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