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Carbon full-suspension mountain bike Trek Fuel LX 9.9 X0 AXS purple phaze/amethyst marble 12-speed

Carbon full-suspension mountain bike Trek Fuel LX 9.9 X0 AXS purple: Maven Silver, ZEB, 160/170 mm

CHF7,958.55 Incl. Tax

Color

Violet et Noir

Size

Size charts

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Trek Fuel LX 9.9 X0 AXS Purple Phaze: braking power for long descents

The Trek Fuel LX 9.9 X0 AXS Gen 7 is the best-armed enduro Fuel for long descents: 4-piston SRAM Maven Silver brakes, a 170 mm RockShox ZEB Ultimate fork, a Vivid Ultimate shock for 160 mm and an OCLV Mountain carbon frame. Trek does not publish a weight for it (weight not published by Trek for this version); for reference, the Fuel LX 9.8 XT Di2, which shares the carbon frame, weighs 15.97 kg in a size M. The Purple Phaze/Amethyst Marble finish blends a dark purple with amethyst swirls.

Technical specifications

Frame	OCLV Mountain carbon, integrated storage, adjustable progression, interchangeable alloy rockers and lower shock mount, ZS headset, BSA 73 threaded bottom bracket, ISCG 05, ABP, UDH hanger, Boost
Suspension	RockShox ZEB Ultimate fork, Linear XL spring with ButterCups, Charger 3.2 RC2 damper, 170 mm, 44 mm offset / RockShox Vivid Ultimate shock 205 x 65 mm, 160 mm
Drivetrain	Wireless SRAM X0 Eagle AXS T-Type 1x12: 30T steel chainring, XS-1295 10-52 cassette, X0 170 mm cranks, AXS battery with charger
Brakes	SRAM Maven Silver hydraulic 4-piston, HS2 200 mm and 180 mm rotors
Wheels / tyres	Bontrager Line Pro 30 / Maxxis Assegai MaxxGrip and Minion DHR II MaxxTerra 29x2.5, EXO+ casing, Tubeless Ready
Cockpit	Race Face ERA carbon handlebar 35 mm, 800 mm, 27.5 mm rise / Race Face Turbine R stem 40 mm, 0°
Saddle / seatpost	Trek Aeolus Pro carbon rails, 145 mm / wireless Fox Transfer NEO, 150 to 200 mm depending on size
Weight	Weight not published by Trek for this version (for reference: Fuel LX 9.8 XT Di2, same carbon frame, 15.97 kg in a size M)

At a glance

✓ OCLV Mountain carbon	✓ RockShox ZEB and Vivid Ultimate
✓ Wireless SRAM X0 AXS T-Type	✓ Wireless Fox Transfer NEO dropper
✓ SRAM Maven Silver brakes	✓ Weight not published (reference 15.97 kg in M)

Who is it for?

For the racer or fast rider who links long descents, where braking becomes the limiting factor well before fitness. It suits those who want a complete enduro race bike straight from handover.

The LVR workshop view

OCLV carbon, Trek's signature. The Fuel LX 9.9 shares the OCLV Mountain frame of the 9.8: the same carbon designed to withstand the repeated impacts of descending, the same Trek lifetime warranty. The difference therefore lies in the spec. A useful reminder: on the Gen 7 Fuel platform, Trek measures 3.31 kg for the carbon frameset and 4.95 kg for the aluminium one (Fuel EX, size M).

	OCLV Mountain (Fuel LX 9.9)	OCLV Mountain (Fuel LX 9.8)	Alpha NEXT Platinum (Fuel LX 9)
Level	Top-end mountain bike carbon	The same carbon	Higher-grade MTB aluminium
Spec	RockShox Ultimate, X0 AXS, wireless dropper	Fox Factory, Shimano XT or XT Di2	Fox Factory or RockShox depending on version
Published weight (M)	not disclosed	15.97 kg (XT Di2)	17.38 to 17.79 kg
What it means	The most adjustable, zero control cables	Same frame, simpler	Heavier, tough frame

Put simply: the 9.9 does not give you a lighter frame than the 9.8, it gives you RockShox Ultimate suspension with more adjustments, a drivetrain and dropper post with no control cables at all, and Line Pro 30 wheels. Trek does not publish its weight: the closest reference remains the Fuel LX 9.8 XT Di2.

Maven Silver is SRAM's most powerful mountain bike brake range; with 4 pistons and a 200 mm HS2 rotor, they keep power consistent even when the descent drags on. Less lever effort means less hand fatigue and more precise braking at the end of a stage.

The X0 Eagle AXS T-Type drivetrain mounts directly on the frame's UDH hanger, with no conventional derailleur hanger: it copes better with rock strikes. The 30-tooth steel chainring and 10-52 cassette provide a very low gear for steep transfers.

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	SRAM X0 Eagle AXS T-Type 1x12	14.08 kg
Fuel LX 9.8 XT Di2	OCLV Mountain carbon	160 / 170 mm	Shimano XT Di2 1x12	15.97 kg
Fuel LX 9.9 X0 AXS	OCLV Mountain carbon	160 / 170 mm	SRAM X0 Eagle AXS T-Type 1x12	not published
Slash 9.9 X0 AXS T-Type	OCLV Mountain carbon	170 / 170 mm	SRAM X0 Eagle AXS T-Type 1x12	16.53 kg

Our take: for long descents, the 9.9 brings Maven Silver brakes and RockShox Ultimate suspension compared with the 9.8 XT Di2 (15.97 kg in M). The Slash 9.9 X0 AXS T-Type, at 16.53 kg, keeps 170 mm at the rear for the steepest slopes.

LVR sizing advice

Between two sizes: the smaller one if you want a lively bike on tight trails, the larger one if you favour composure at high speed. The Fox Transfer NEO dropper goes from 150 to 200 mm of travel depending on size.

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	175	200	200

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

Your questions

Are the Mavens too powerful?	No, they modulate well; we adjust the lever position to your hands.
What does the T-Type mounting change?	The derailleur mounts on the UDH hanger, which is tougher against impacts.
Which brake fluid?	The Mavens use SRAM mineral fluid; we handle the bleed in our workshop.
Does the purple fade in the sun?	Trek paint is durable; a rinse and gentle care are enough.

The LVR Cycles verdict

The Fuel LX to choose for long, aggressive descents, with Maven braking that never fades and a robust drivetrain. Its dark purple with amethyst swirls gives it a look all of its own.

Pros
+ Very powerful Maven Silver brakes
+ Robust T-Type derailleur
+ Purple with amethyst swirls

Cons
- Weight not published by Trek
- Specific brake maintenance

Why buy from LVR Cycles? In Béziers, we bleed the Maven brakes, set the lever position and prepare your Fuel LX for long days of enduro around Lodève.

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-5351779

Data sheet