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Carbon full-suspension mountain bike Trek Fuel MX 9.9 X0 AXS gloss chameleon green/matte black 12-speed

Carbon full-suspension mountain bike Trek Fuel MX 9.9 X0 AXS chameleon green: mountain trips, 150/170 mm

CHF7,775.57 Incl. Tax

Color

Black and green

Size

Size charts

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Trek Fuel MX 9.9 X0 AXS Chameleon Green: the companion for mountain trips

The Trek Fuel MX 9.9 X0 AXS Gen 7 is designed for big terrain: OCLV Mountain carbon frame, RockShox ZEB and Vivid Ultimate suspension (170 mm up front, 150 mm at the rear), Line Pro 30 carbon wheels, mixed 29 / 27.5-inch set-up and wireless X0 Eagle AXS drivetrain. Weight not published by Trek for this version; as a reference, the Fuel EX 9.9 X0 AXS weighs 14.08 kg in a size M according to Trek. Its Gloss Chameleon Green/Matte Black finish pairs a glossy chameleon green with shifting tints and a matte black.

Technical specifications

Frame	OCLV Mountain carbon, integrated storage, adjustable progression, interchangeable rocker link and lower shock mount, down tube and transport protection, threaded BSA 73 bottom bracket, ISCG 05, ABP, UDH hanger, Boost
Suspension	RockShox ZEB Ultimate fork, Charger 3.2 RC2 damper, 170 mm / RockShox Vivid Ultimate shock 205 x 65 mm, 150 mm at the rear
Drivetrain	Wireless SRAM X0 Eagle AXS T-Type 1x12, 30T chainring, XS-1295 10-52 cassette, AXS battery with charger
Brakes	SRAM Maven Silver hydraulic 4-piston, HS2 200 and 180 mm rotors
Wheels / tyres	Bontrager Line Pro 30 carbon / mixed set-up: Maxxis Assegai 29x2.5 MaxxGrip up front, Minion DHR II 27.5x2.5 MaxxTerra at the rear, EXO+, Tubeless Ready
Cockpit	Race Face ERA carbon handlebar 800 mm (27.5 mm rise), Race Face Turbine R stem 40 mm
Saddle / seatpost	Trek Aeolus Pro carbon rails 145 mm / Fox Transfer Neo dropper post, 150 to 200 mm depending on size
Weight	Weight not published by Trek for this version; for reference: Fuel EX 9.9 X0 AXS 14.08 kg in a size M

At a glance

✓ OCLV Mountain carbon	✓ RockShox ZEB / Vivid, 170 / 150 mm
✓ Wireless SRAM X0 Eagle AXS	✓ Line Pro 30 carbon wheels
✓ Race Face ERA carbon handlebar	✓ Weight n/a; reference EX 9.9 X0 AXS 14.08 kg (M)

Who is it for?

For the mountain biker who goes on a trip to the Alps or the Pyrenees every summer and alternates day rides, lifts and long natural descents. The rest of the year, they ride the trails of the Hérault and want a single high-end bike for both.

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.

	OCLV Mountain (Fuel MX 9.8 / 9.9)	Alpha NEXT Platinum (Fuel MX 9)	Carbon Fuel EX / LX
Level	Trek's mountain bike carbon, tuned for impacts	Trek's most advanced aluminium	Same Gen 7 Fuel platform
Construction	Plies compacted under heat and pressure	Alpha NEXT Platinum alloy	Identical OCLV Mountain carbon
Gen 7 Fuel frameset (M)	3.31 kg (Fuel EX figure)	4.95 kg (Fuel EX figure)	3.31 kg for the EX
What it means	Around 1.6 kg less on the frame, lifetime warranty	Heavier, gentler on the budget	145 / 150 mm (EX) or 160 / 170 mm (LX)

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.

On a trip, reliability comes first: the X0 AXS drivetrain and the Fox Transfer Neo dropper have no cables to adjust, and their batteries recharge overnight at your accommodation. The integrated frame storage holds what you need to fix a puncture, lightening your pack for long descents.

On descents of several hundred metres, the ZEB fork and Vivid shock keep plenty in reserve, and the Maven Silver brakes, with 200 and 180 mm rotors, handle repeated braking. Before you leave, we check pads, suspension pressures and tubeless sealant so you can set off with peace of mind.

Which Fuel should you choose?

Model	Frame	Travel rear / front	Drivetrain	Weight (M)
Fuel EX 9.9 X0 AXS	OCLV Mountain carbon	145 / 150 mm	Wireless SRAM X0 AXS	14.08 kg
Fuel MX 9.8 XT Di2	OCLV Mountain carbon	150 / 160 mm	Wireless Shimano XT Di2	not disclosed
Fuel MX 9.9 X0 AXS	OCLV Mountain carbon	150 / 170 mm	Wireless SRAM X0 AXS	not published
Fuel LX 9.8 XT Di2	OCLV Mountain carbon	160 / 170 mm	Wireless Shimano XT Di2	15.97 kg

Our take: at 150/170 mm, this 9.9 X0 AXS is the Fuel MX best suited to the mountains, with its carbon wheels. The Fuel LX 9.8 XT Di2 (15.97 kg in M) adds 10 mm at the rear for pure enduro; the Fuel EX 9.9 X0 AXS (14.08 kg) targets trail riding.

LVR sizing advice

Between two sizes, choose the smaller one for playful handling, the larger one for stability on long descents. The Fox Transfer Neo goes from 150 mm in S to 175 mm in M and 200 mm above.

Size	S	M	L	XL	XXL
Rider height (cm)	155-165	165-177	177-188	188-195	195-203
Inseam (cm)	74-78	79-83	84-89	89-91	91-97
Dropper post (mm)	150	175	200	200	200

Source: Trek size guide. Bike fitting available in our Béziers shop.

Your questions

How many batteries to charge?	The AXS derailleur one and the Fox Transfer Neo dropper one; remember the chargers on trips.
Suitable for lift-assisted riding?	Yes, its 170 mm fork handles resort descents.
What dropper travel in M?	175 mm in a size M, 150 mm in S and 200 mm in L, XL and XXL.
Does the chameleon green change shade?	Yes, its tints shift with the light, from deep green to brighter hues.

The LVR Cycles verdict

The ideal Fuel MX for mountain trips, with high-end cable-free kit and suspension that keeps plenty in reserve. Its glossy chameleon green on matte black changes appearance throughout the day.

Pros
+ Suspension with plenty in reserve
+ Cable-free electronic kit
+ Spectacular chameleon green

Cons
- Weight not published
- Batteries to manage on trips

Why buy from LVR Cycles? In Béziers, we prepare your Fuel MX before every mountain trip, charge and update the AXS drivetrain and service the suspension when you get back.

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

Reference TRK-5356034

Data sheet