Carbon full-suspension mountain bike Trek Fuel MX 9.9 X0 AXS carmine and black: wireless T-Type, 150/170 mm

Trek Fuel MX 9.9 X0 AXS Dark Carmine: a drivetrain that takes everything in its stride

The Trek Fuel MX 9.9 X0 AXS Gen 7 brings together an OCLV Mountain carbon frame, 150 mm of rear travel and 170 mm up front, Bontrager Line Pro 30 carbon wheels and a wireless SRAM X0 Eagle AXS T-Type drivetrain. Weight not published by Trek for this version; Trek gives 14.08 kg in a size M for the Fuel EX 9.9 X0 AXS, to be taken simply as a reference. The Gloss Dark Carmine/Matte Trek Black paintwork pairs a glossy dark carmine red with a matte black.

Technical specifications

Who is it for?

For the mountain biker who rides hard on rocky terrain and has already broken a derailleur hanger or two. They want a robust drivetrain, precise under load, and a high-end bike capable of lasting several seasons.

The LVR workshop view

OCLV Mountain carbon, Trek's signature. At the top of the Fuel MX range, the 9.9 X0 AXS keeps the OCLV Mountain carbon frame of the 9.8: a mountain bike carbon compacted under heat and pressure, with fibres laid out to withstand repeated impacts rather than break lightness records. What sets it apart is the kit fitted around it: carbon wheels, carbon handlebar and wireless electronics. Trek lifetime warranty on the frame.

Put simply: on a 9.9, it is no longer the frame that makes the difference but the parts that complete it. The Line Pro 30 carbon wheels and the Race Face ERA cockpit reduce rotating mass and weight up front, which you feel above all when changing direction and accelerating.

The X0 Eagle AXS T-Type derailleur mounts directly on the UDH hanger, with no intermediate part: it copes far better with a rock strike and its adjustment does not drift. Shifts happen under full load, and the XS-1295 10-52 cassette offers a very easy sprocket for the steepest climbs.

The Trek Aeolus Pro saddle with carbon rails and AirLoom structure, and the 800 mm Race Face ERA carbon handlebar complete a high-end cockpit. The handlebar can be cut down if you prefer it narrower: we adjust its width, the height of the 40 mm stem and the lever position to your build.

Which Fuel should you choose?

Our take: compared with the Fuel MX 9.8 XT Di2, this 9.9 X0 AXS brings the 170 mm fork, carbon wheels and handlebar. It shares its RockShox suspension with the MX 9.8 Eagle 90; the Fuel EX 9.9 X0 AXS (14.08 kg in M) remains the trail version, at 145/150 mm.

Your questions

Why buy from LVR Cycles? As a Trek dealer in Béziers, we set up your X0 AXS drivetrain, adjust the cockpit to your build and provide complete servicing for your Fuel MX.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.