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Aluminium full-suspension mountain bike Trek Fuel MX 9 Eagle 90 RockShox lithium grey / trek black splatter 12-speed

Aluminium full-suspension mountain bike Trek Fuel MX 9 Eagle 90 grey: ZEB and Vivid 150/170 mm, 16.78 kg

zł24,193.22 Incl. Tax

Color

Gris et Noir

Size

Size charts

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Trek Fuel MX 9 Eagle 90 RockShox grey: a ZEB fork for charging

This Trek Fuel MX 9 Eagle 90 Gen 7 is fitted by Trek with a 170 mm RockShox ZEB Ultimate fork and a Vivid Ultimate shock, with 150 mm at the rear, on an Alpha NEXT Platinum aluminium frame. Trek claims 16.78 kg in a size M for the Fuel MX 9 Eagle 90. It comes in sizes S to XL. The Lithium Grey / Trek Black Splatter version features a light grey dotted with black speckles.

Technical specifications

Frame	Alpha NEXT Platinum aluminium, integrated storage, adjustable progression, interchangeable rocker and lower shock mount, ABP, threaded BSA 73 bottom bracket, ISCG 05
Suspension	Fox Factory 36 GRIP X2 fork, 160 mm / Fox Factory Float X 205x60 mm shock, 150 mm at the rear
Drivetrain	Mechanical SRAM Eagle 90 T-Type 1x12, 30T chainring, XS-1275 10-52 cassette
Brakes	SRAM Maven Bronze hydraulic 4-piston, HS2 200 and 180 mm rotors
Wheels / tyres	Bontrager Line Comp 30 / Maxxis Assegai MaxxGrip 29x2.5 front, Minion DHR II MaxxTerra 27.5x2.5 rear, EXO+, Tubeless Ready
Cockpit	Race Face Turbine alloy 35 mm handlebar (40 mm rise), Bontrager Elite 45 mm stem, Trek Line Elite grips
Saddle / seatpost	Verse Short Comp 145 mm / Bontrager Line Dropper 34.9 mm dropper post (150 to 200 mm travel depending on size)
Weight	16.78 kg in size M (Trek figure, with tubeless sealant, no inner tubes)

At a glance

✓ Alpha NEXT Platinum alloy frame	✓ Fox Factory 36 and Float X
✓ Mixed 29 / 27.5 wheels	✓ SRAM Eagle 90 T-Type 10-52
✓ Maven Bronze 4-piston brakes	✓ 16.78 kg in size M

Who is it for?

For the rider who wants a very stable front end when the terrain gets rough, on the rocky descents of the Caroux or regional enduro stages, while keeping a bike that can climb back up. The four sizes fit a 1.55 m rider as well as a tall one.

The LVR workshop view

Alpha NEXT Platinum aluminium, the pinnacle of Trek alloy. Trek grades its aluminium in three tiers: Alpha Silver on the Marlin, Alpha Platinum above it, and Alpha NEXT Platinum, reserved for the 7th generation of the Fuel. It is the latter that forms the base of the Fuel MX 9 Eagle 90. On the Fuel EX of the same generation, the alloy frameset weighs 4.95 kg in M, against 3.31 kg for the carbon version: the gap is real, but a well-made alloy frame takes rocks and crashes without leaving you worrying about the slightest invisible crack.

	Alpha NEXT Platinum (Fuel 9)	OCLV Mountain (Fuel 9.8 / 9.9)	Alpha Platinum (Slash 8)
Level	Trek's best aluminium	Trek's mountain bike carbon	High-end alloy, one step below NEXT
Designed to	Take knocks at a sensible cost	Save weight, resist impacts	Aluminium enduro frames
Gen 7 Fuel EX frameset (M)	4.95 kg	3.31 kg	not applicable
What it means	Heavier, but unbothered by small knocks	1.64 kg less on the frameset	Previous aluminium generation

Put simply: with the same drivetrain, this alloy Fuel MX amounts to a complete bike capable of the same descents as the carbon 9.8. The extra grams are felt mainly on long climbs; on descents, the stability of a slightly heavier frame is no bad thing.

The ZEB is a fork with large-diameter stanchions, renowned for its torsional stiffness: the front wheel holds the chosen line even when it hits a rock step. Its Charger 3.2 RC2 damper and the Vivid shock offer plenty of adjustments; we start from a neutral baseline, then fine-tune after your first rides.

The frame has ISCG 05 mounts for a chain guide and a threaded BSA bottom bracket that is easy to maintain. With 170 mm up front, the bike comes close to an enduro bike; the rear, however, keeps the lively character of the Fuel MX, giving a bike whose front end reassures and whose rear end accelerates.

Which Fuel should you choose?

Model	Frame	Travel rear / front	Drivetrain	Weight (M)
Fuel EX 9 Eagle 90	Alpha NEXT Platinum alloy	145 / 150 mm	SRAM Eagle 90 1x12	16.58 kg
Fuel MX 9 Eagle 90 (Fox)	Alpha NEXT Platinum alloy	150 / 160 mm	SRAM Eagle 90 1x12	16.78 kg
Fuel MX 9 XT	Alpha NEXT Platinum alloy	150 / 160 mm	Shimano XT 1x12	16.91 kg
Fuel LX 9 Eagle 90	Alpha NEXT Platinum alloy	160 / 170 mm	SRAM Eagle 90 1x12	17.38 kg

Our take: the MX 9 X0 AXS shares exactly this RockShox suspension with a wireless drivetrain and Maven Silver brakes. For a true enduro bike, the Fuel LX 9 Eagle 90 goes up to 160 mm at the rear for 17.38 kg.

LVR sizing advice

Hesitating between two sizes: the smaller one makes the bike playful in tight corners, the larger one makes it more composed at high speed. Dropper post travel increases with size, from 150 to 200 mm.

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 of travel)	150	170	200	200

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

Your questions

Why 170 mm up front?	It is Trek's choice on this version: more margin on impacts, at the cost of a slightly higher front end.
Can I fit a chain guide?	Yes, the frame has ISCG 05 mounts; we can fit it in our workshop.
Which size for 1.80 m?	The L covers 177 to 188 cm; to be checked against your inseam in store.
Does this grey show the dirt?	The black speckles hide mud and dust marks very well.

The LVR Cycles verdict

A version that focuses on the front end: the 170 mm ZEB gives invaluable confidence on aggressive descents. The grey finish speckled with black stays understated and versatile.

Pros
+ Stiff, reassuring ZEB fork
+ Four sizes from S to XL
+ ISCG 05 mounts for a chain guide

Cons
- Basic mechanical drivetrain
- A bit of weight to haul uphill

Why buy from LVR Cycles? As a Trek dealer in Béziers, we set up your ZEB and Vivid at handover, service them periodically and fit a chain guide if needed.

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-5351788

Data sheet