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

Carbon full-suspension mountain bike Trek Fuel EX 9.9 X0 AXS chameleon green: S to XXL, wireless, 14.08 kg

$13,786.71 Incl. Tax

Color

Black and green

Size

Size charts

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Trek Fuel EX 9.9 X0 AXS Chameleon Green: the fully wireless bike of the trail range

Available from S to XXL, the Trek Fuel EX 9.9 X0 AXS Gen 7 is fully wireless for both drivetrain and dropper post: a SRAM X0 Eagle AXS T-Type derailleur and a RockShox Reverb AXS from 150 to 200 mm depending on size. OCLV Mountain carbon frame, RockShox Ultimate suspension at 145 / 150 mm and Line Pro 30 carbon wheels, for 14.08 kg in a size M. The Gloss Chameleon Green/Matte Black pairs a glossy, colour-shifting green with a matte black.

Technical specifications

Frame	OCLV Mountain carbon, integrated storage, adjustable progression, threaded BSA 73, ISCG 05, UDH hanger, Boost
Suspension	RockShox Lyrik Ultimate Charger 3.1 RC 150 mm / Super Deluxe Ultimate RC2T 145 mm
Drivetrain	Wireless SRAM X0 Eagle AXS T-Type 1x12, 30T chainring, XS-1295 10-52 cassette, X0 Eagle chain
Brakes	SRAM Maven Silver hydraulic 4-piston, HS2 rotors 200 mm (front) and 180 mm (rear)
Wheels / tyres	Bontrager Line Pro 30 carbon / Maxxis Minion DHF (front) and DHR II (rear) 2.5, EXO+, Tubeless Ready
Cockpit	Race Face ERA carbon 800 mm handlebar, 27.5 mm rise, Race Face Turbine R 40 mm stem
Saddle / seatpost	Trek Aeolus Pro with carbon rails, 145 mm / wireless RockShox Reverb AXS, 150 to 200 mm depending on size
Weight	14.08 kg in size M (Trek figure, with tubeless sealant)

At a glance

✓ OCLV Mountain carbon	✓ Wireless SRAM X0 Eagle AXS T-Type
✓ RockShox Ultimate 145 / 150 mm	✓ Bontrager Line Pro 30 carbon wheels
✓ Wireless Reverb AXS post	✓ 14.08 kg in size M

Who is it for?

For the mountain biker drawn to electronics who wants a clean cockpit, with no derailleur or dropper cable. It will suit the rider who looks after their kit and likes to monitor components from the SRAM app.

The LVR workshop view

OCLV carbon, Trek's signature. Since 1992, Trek has cured its fibres under pressure for void-free frames. The Mountain version reinforces the areas hit by rocks and landings. Frameset: 3.31 kg (M), with lifetime warranty.

	OCLV Mountain (Fuel EX 9.8 / 9.9)	Alpha NEXT Platinum (Fuel EX 5 to 9)	Road OCLV (Madone, Domane)
Level	MTB carbon, alloy frame rocker	Trek premium aluminium	Trek road carbon
Construction	OCLV reinforced in exposed areas	Hydroforming, smoothed welds	OCLV lightened to the maximum
Fuel EX frameset (M)	3.31 kg	4.95 kg	not applicable
What it means	Base of the lightest Fuel EX	1.64 kg more on the frame	Not made for MTB impacts

Put simply: same frame as the 9.8 models; the 1.20 kg saving over the 9.8 XT comes down to the kit.

The SRAM AXS ecosystem links derailleur and dropper post wirelessly, with an app that shows battery status and lets you customise the controls. We handle pairing and the firmware update at handover, then at every service.

The derailleur and dropper batteries are identical and interchangeable: if you forget to charge one, you can swap one over to finish your ride. A simple habit to get into, which makes wireless very easy to live with day to day.

Which Fuel should you choose?

Model	Frame	Travel rear / front	Drivetrain	Weight (M)
Fuel EX 9.8 XT	OCLV Mountain carbon	145 / 150 mm	Mechanical Shimano XT	15.28 kg
Fuel EX 9.9 X0 AXS	OCLV Mountain carbon	145 / 150 mm	Wireless SRAM X0 Eagle AXS	14.08 kg
Top Fuel 9.8 XT Di2	OCLV Mountain carbon	120 / 130 mm	Wireless Shimano XT Di2	14.00 kg
Fuel LX 9.8 XT Di2	OCLV Mountain carbon	160 / 170 mm	Wireless Shimano XT Di2	15.97 kg

Our take: the 9.9 X0 AXS is the only carbon Fuel EX that is fully wireless, derailleur and dropper. The 9.8 XT Di2 offers the Shimano wireless derailleur with a cable-actuated dropper.

LVR sizing advice

If you are between two sizes, the smaller favours handling on technical trails, the larger composure when the terrain speeds up. The Reverb AXS goes from 150 mm in S to 200 mm from L, and size S uses a 27.5-inch rear wheel.

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
Wheels front / rear (in)	29 / 27.5	29 / 29	29 / 29	29 / 29	29 / 29

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

Your questions

Are the batteries identical?	Yes, the derailleur and the Reverb AXS use the same SRAM AXS battery.
Which size should I choose?	From S to XXL, depending on your height and inseam; we confirm it in store.
Is the app required?	No, but it lets you monitor the batteries and customise the controls.
Is the chameleon green discreet?	It changes with the light, from bright green to golden tints.

The LVR Cycles verdict

The fully wireless Fuel EX, the lightest and best equipped, available in every size. Its glossy chameleon green on matte black makes it instantly recognisable.

Pros
+ Wireless derailleur and dropper
+ Interchangeable batteries
+ Available from S to XXL

Cons
- Reliance on batteries
- Costly carbon parts if broken

Why buy from LVR Cycles? In Béziers, we pair your AXS components, update the firmware and set up your Fuel EX for your height and weight.

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-5356145

Data sheet