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Aluminium full-suspension mountain bike Trek Fuel LX 9 XT Di2 lithium grey/trek black splatter 12-speed

Aluminium full-suspension mountain bike Trek Fuel LX 9 XT Di2 grey: wireless Shimano, Fox 38, 160/170 mm

Kč150,926.68 Incl. Tax

Color

Gris et Noir

Size

Size charts

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Trek Fuel LX 9 XT Di2 Lithium Grey: Shimano goes wireless

The Trek Fuel LX 9 XT Di2 Gen 7 combines an Alpha NEXT Platinum aluminium frame, a 170 mm Fox Factory 38 fork, a 160 mm DHX2 coil shock and the wireless electronic Shimano XT Di2 drivetrain. Trek does not publish the weight of this version; for reference, the Fuel LX 9 XT, on the same alloy frame, weighs 17.79 kg in a size M. The Lithium Grey / Trek Black Splatter colourway shows a lithium grey speckled with black.

Technical specifications

Frame	Alpha NEXT Platinum aluminium, in-frame storage, adjustable progression, interchangeable rocker and lower shock mount, ABP pivot, threaded BSA 73 bottom bracket, ISCG 05, down tube protection
Suspension	Fox Factory 38 Float EVOL fork, GRIP X2 damper, 170 mm / Fox DHX2 coil shock 205 x 65 mm, 160 mm
Drivetrain	Wireless Shimano XT Di2 1x12, M8250 long-cage derailleur, XT M8200 30T crankset (165 or 170 mm according to Trek data), XT M8200 10-51 cassette
Brakes	Shimano XT M8220 4-piston hydraulic, RT86 203 and 180 mm rotors
Wheels / tyres	Bontrager Line Comp 30 / Maxxis Assegai MAXXGRIP (front) and Minion DHR II MAXXTERRA (rear), 29 x 2.5, EXO+ casing, Tubeless Ready
Cockpit	Race Face Turbine alloy 35 mm handlebar, 40 mm rise; Bontrager Elite 45 mm stem
Saddle / seatpost	Verse Short Comp 145 mm / Bontrager Line Dropper post 150/170/200 mm depending on size, 34.9 mm
Weight	Weight not published by Trek for this version (for reference: Fuel LX 9 XT, identical alloy frame, 17.79 kg in a size M)

At a glance

✓ Electronic Shimano XT Di2	✓ Fox 38 Factory / DHX2 coil
✓ 160 / 170 mm travel	✓ 4-piston XT brakes, 203 mm rotor
✓ Dropper post up to 200 mm	✓ Reference: 17.79 kg (LX 9 XT, M)

Who is it for?

It is intended for the Shimano loyalist who wants to enjoy electronics, with configurable shifting and no cable to adjust. It suits the mountain biker who likes to personalise their bike and tailor how the drivetrain behaves.

The LVR workshop view

Alpha NEXT Platinum, the choice of toughness. The Fuel LX 9 XT Di2 shares its aluminium frame with the other Fuel LX 9 models: Trek's highest grade of mountain bike alloy, with progression adjustment and interchangeable kinematic parts. Pairing this frame with an electronic Di2 drivetrain is a bet on reliability: a frame that does not fear impacts, and a derailleur that stays in adjustment ride after ride.

	Alpha NEXT Platinum (Fuel LX 9)	OCLV Mountain (Fuel LX 9.8)	Alpha Platinum (Slash 8)
Level	Trek's best MTB aluminium, reserved for Gen 7 Fuels	Trek's mountain bike carbon	Aluminium from the range above
Construction	Alloy engineered for strength, highly adjustable frame	OCLV layup tuned for impact resistance	Tough alloy, simpler kinematics
Reference bike	Gen 7 alloy Fuel EX frameset: 4.95 kg (M)	Gen 7 carbon Fuel EX frameset: 3.31 kg (M)	Complete Slash 8: 16.68 kg (M)
What it means	Takes knocks, more affordable	About 1.6 kg less on the frameset	170 mm alloy enduro, less adjustable

Put simply: you get Shimano electronics without moving to carbon. Trek does not give the weight of this version; the mechanical Fuel LX 9 XT, on the same frame, weighs 17.79 kg in M.

The XT Di2 drivetrain is configurable: shift speed, shifter button functions, multi-shift. This is set up via the Shimano app, and we help you configure it to suit your habits. Shifts stay crisp even under load, a real plus when accelerating.

The rest of the build follows the Fuel LX 9 XT base: four-piston Shimano XT M8220 brakes with a 203 mm front rotor, 2.5-inch Maxxis tyres and a dropper post matched to the size. A welcome consistency for a rider attached to the Shimano world.

Which Fuel should you choose?

Model	Frame	Drivetrain	Travel rear / front	Weight (M)
Fuel LX 9 XT	Alpha NEXT Platinum alloy	Mechanical Shimano XT	160 / 170 mm	17.79 kg
Fuel LX 9 XT Di2	Alpha NEXT Platinum alloy	Wireless Shimano XT Di2	160 / 170 mm	n/a (reference 17.79 kg)
Fuel LX 9.8 XT Di2	OCLV Mountain carbon	Wireless Shimano XT Di2	160 / 170 mm	15.97 kg
Slash 9.8 XT Di2	OCLV Mountain carbon	Wireless Shimano XT Di2	170 / 170 mm	16.63 kg

Our take: compared with the mechanical LX 9 XT (17.79 kg in M), this Di2 adds wireless shifting on the same frame. For a lighter bike, the carbon LX 9.8 XT Di2 weighs 15.97 kg; the Slash 9.8 XT Di2 moves to 170 mm at the rear.

LVR sizing advice

From S to XL, this Fuel LX covers riders from 155 to 195 cm. Also consider the dropper post travel: 150 mm in S, 170 mm in M, 200 mm in L and XL.

Size	S	M	L	XL
Rider height (cm)	155-165	165-177	177-188	188-195
Inseam (cm)	74-78	79-83	84-89	89-91
Dropper post (mm)	150	170	200	200

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

Your questions

What can be configured?	Shift speed, button functions and multi-shift.
What does this model weigh?	Not published by Trek; for reference: 17.79 kg in M for the LX 9 XT.
Does it need charging?	Yes, from time to time; remember before a long ride.
Compatible with my Shimano habits?	Yes, the brakes and cassette are standard XT.

The LVR Cycles verdict

An alloy Fuel LX that brings Shimano into the wireless era, with configurable, precise shifting. Its grey speckled with black gives it a technical look.

Pros
+ Configurable Shimano XT Di2
+ Fox 38 and DHX2 coil
+ Technical grey

Cons
- Weight not published
- Charging to plan ahead

Why buy from LVR Cycles? In Béziers, we configure your XT Di2 drivetrain with you, set up the Fox suspension and bleed the brakes before handover.

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-5351700

Data sheet