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Aluminium full-suspension mountain bike Trek Fuel MX 9 Eagle 90 RockShox matte sedona red/pennyflake splatter 12-speed

Aluminium full-suspension mountain bike Trek Fuel MX 9 Eagle 90 red: ZEB 170 mm, Maven Bronze, 16.78 kg

£4,590.68 Incl. Tax

Color

Rouge et Orange

Size

Size charts

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Trek Fuel MX 9 Eagle 90 Sedona Red: bike park sessions and a ride home along the ridges

Designed to be as much fun going down as going up, the Trek Fuel MX 9 Eagle 90 Gen 7 gets a 170 mm RockShox ZEB Ultimate, a Vivid Ultimate shock and 150 mm of rear travel here. The Alpha NEXT Platinum aluminium frame and SRAM Eagle 90 drivetrain complete a package of 16.78 kg in a size M according to Trek. The Matte Sedona Red/Pennyflake Splatter pairs a matte brick red with copper-coloured flecks.

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 young rider or experienced shredder who alternates bike park days, downhill tracks and Sunday all-mountain rides, and wants a single tough bike. It will appeal to those who love jumping, carving berms and looking for little kickers along the edge of the trail.

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.

At the bike park, it is the landings that wear a bike out. The Vivid Ultimate keeps its behaviour over repeated descents, and the frame's adjustable progression lets you firm up the end of the stroke to absorb big jumps. We recommend checking the sag after the first sessions, once the seals have bedded in.

Maxxis EXO+ tyres offer a reinforced casing against pinch flats, useful on the region's rocks; converting to tubeless with sealant is the first thing we recommend. The Maven Bronze brakes, with a 200 mm rotor, go the distance on a bike park run ridden several times over.

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: this RockShox MX 9 Eagle 90 weighs 600 g less than the Fuel LX 9 Eagle 90 claimed at 17.38 kg, for 10 mm less at the rear. If pedalling back up is part of your day, this is the right compromise.

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

Tough enough for the bike park?	Yes, with suitable settings; for almost exclusively bike park riding, the Fuel LX remains the better choice.
Should I go tubeless?	We recommend it: the rims and tyres are designed for it, and we do the set-up.
Can I firm up the suspension?	Yes, through the air pressure and the frame's adjustable progression.
Does the matte red age well?	Yes, as long as you wash it without polishing products so it does not turn shiny.

The LVR Cycles verdict

The most aggressive Fuel MX 9 Eagle 90, ready to link descent sessions and then pedal back up the ridges. Its coppery brick red catches the eye in the bike park car park.

Pros
+ 170 mm ZEB fork and Vivid Ultimate
+ Protective EXO+ casing
+ Matte red with copper flakes

Cons
- Basic Eagle 90 drivetrain
- Not a bike for long, flowing rides

Why buy from LVR Cycles? Our Béziers workshop prepares your Fuel MX for the bike park: tubeless set-up, suspension set-up and brake service before the season.

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-5349112

Data sheet