Carbon full-suspension mountain bike Trek Fuel MX 9.9 X0 AXS mauve: ZEB and Vivid, Maven Silver, 150/170 mm

Trek Fuel MX 9.9 X0 AXS Purple Phaze: 170 mm up front for aggressive descents

The Trek Fuel MX 9.9 X0 AXS Gen 7 is the best equipped of the carbon Fuel MX models: 170 mm RockShox ZEB Ultimate fork, Vivid Ultimate shock for 150 mm of rear travel, 4-piston SRAM Maven Silver brakes and wireless X0 Eagle AXS drivetrain. Weight not published by Trek for this version; to give a rough idea, Trek claims 14.08 kg in a size M for the Fuel EX 9.9 X0 AXS. Its Purple Phaze/Amethyst Marble livery blends a deep mauve with amethyst marbling.

Technical specifications

Who is it for?

For the committed rider who frequents the region's enduro spots, around Lodève, and spends a few days a year at the bike park, but wants a bike that stays pleasant to pedal the rest of the time.

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 SRAM Maven Silver brakes offer downhill-grade braking power, with four pistons and 200 and 180 mm HS2 rotors. On a long, steep slope, the lever holds its position and modulation stays fine, letting you brake late and enter tight corners with confidence.

The ZEB Ultimate and Vivid Ultimate pairing is also found on the SRAM-equipped Fuel LX models: enduro suspension on a bike that keeps 150 mm at the rear and stays lively under pedalling. On bike park landings, this reserve lets you recover from a line mistake without bottoming out.

Which Fuel should you choose?

Our take: at 150/170 mm, this 9.9 X0 AXS sits a notch below the Fuel LX 9.8 XT Di2 (160/170 mm, 15.97 kg in M) and above the Fuel EX 9.9 X0 AXS (145/150 mm, 14.08 kg). The MX 9.8 XT Di2 makes do with a 160 mm Fox fork and aluminium wheels.

Your questions

Why buy from LVR Cycles? In Béziers, we set up your RockShox suspension for enduro, bleed the Maven brakes and service your Fuel MX after bike park days.

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