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Carbon full-suspension mountain bike Trek Fuel LX 9.8 Eagle 90 gloss dark carmine/matte trek black 12-speed

Carbon full-suspension mountain bike Trek Fuel LX 9.8 Eagle 90 carmine: climbing carbon, 160/170 mm

kr70,664.15 Incl. Tax

Color

Black and red

Size

Size charts

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Trek Fuel LX 9.8 Eagle 90 Dark Carmine: carbon for long climbs

The Trek Fuel LX 9.8 Eagle 90 Gen 7 puts its OCLV Mountain carbon frame to work on the climbs: less weight to haul, and a 10-52 cassette for steep gradients. A 170 mm RockShox ZEB Ultimate fork and a 160 mm Vivid Ultimate for the descent. Trek does not publish its weight; for reference: 15.97 kg in a size M for the 9.8 XT Di2 on the same frame. The Gloss Dark Carmine / Matte Trek Black version contrasts a glossy dark carmine with a matte black.

Technical specifications

Frame	OCLV Mountain carbon, in-frame storage, adjustable progression, interchangeable alloy rocker link and lower shock mount, ABP pivot, UDH hanger, threaded BSA 73 bottom bracket, ISCG 05
Suspension	RockShox ZEB Ultimate fork, Linear XL spring with ButterCups, Charger 3.2 RC2 damper, 170 mm / RockShox Vivid Ultimate shock 205 x 65 mm, 160 mm
Drivetrain	Mechanical SRAM Eagle 90 T-Type 1x12, steel 30T 170 mm chainset, 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 (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 9.8 XT Di2, identical carbon frame, 15.97 kg in a size M)

At a glance

✓ OCLV Mountain carbon frame	✓ ZEB Ultimate and Vivid Ultimate
✓ 160 mm rear / 170 mm front	✓ Mechanical SRAM Eagle 90
✓ Five sizes, from S to XXL	✓ Reference: 15.97 kg (LX 9.8 XT Di2, M)

Who is it for?

The mountain biker who racks up plenty of climbing before each descent, and finds alloy enduro bikes too heavy on long ascents, will find a good compromise here. It suits riders heading into the mountains for the day.

The LVR workshop view

OCLV Mountain carbon, Trek's mountain bike signature. OCLV is Trek's carbon process; its Mountain version is tuned for impact resistance rather than weight saving alone. The Fuel LX 9.8 benefits with a frame lighter than the Alpha NEXT Platinum alloy of the LX 9, the same adjustable kinematics, a UDH hanger and Trek's lifetime warranty on the frame.

	OCLV Mountain (Fuel LX 9.8)	Alpha NEXT Platinum (Fuel LX 9)	OCLV Mountain (Slash 9.8)
Level	Trek's mountain bike carbon, lifetime warranty	Trek's best mountain bike aluminium	Same carbon, more aggressive bike
Construction	OCLV layup tuned to absorb impacts	Alloy engineered for strength	OCLV layup, 170 mm at the rear
Reference bike	Gen 7 carbon Fuel EX frameset: 3.31 kg (M)	Gen 7 alloy Fuel EX frameset: 4.95 kg (M)	Slash 9.8 XT Di2: 16.63 kg (M)
What it means	About 1.6 kg less on the frameset	Heavier, more affordable	More travel, less versatile

Put simply: the 9.8 Eagle 90 is the most direct way to get a carbon Fuel LX. The drivetrain stays mechanical and robust; the weight is not published, but the 9.8 XT Di2 on the same frame weighs 15.97 kg in M.

Carbon saves weight where you feel it most: on the frame, at the centre of the bike. According to Trek, the carbon Fuel EX frameset weighs 1.64 kg less than the alloy one; a similar difference can be felt here on the long climbs of the Espinouse. The 30 x 52 lets you keep a steady cadence.

On the climbs, the Charger 3.2 RC2 damper lets you firm up the low-speed compression to limit bobbing. The Vivid stays active and preserves traction on rocky climbs. At the top, just open the compression and drop the saddle to attack the descent.

Which Fuel should you choose?

Model	Frame	Drivetrain	Travel rear / front	Weight (M)
Fuel LX 9 Eagle 90	Alpha NEXT Platinum alloy	Mechanical SRAM Eagle 90	160 / 170 mm	17.38 kg
Fuel LX 9.8 Eagle 90	OCLV Mountain carbon	Mechanical SRAM Eagle 90	160 / 170 mm	n/a (reference 15.97 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: for climbing, this carbon 9.8 Eagle 90 is lighter than the alloy LX 9 Eagle 90 (17.38 kg). The 9.8 XT Di2 (15.97 kg in M) adds Di2; the more aggressive Slash 9.8 XT Di2 weighs 16.63 kg.

LVR sizing advice

Like the other carbon Fuel LX models, it is offered up to XXL and covers riders from 155 to 203 cm. Tall riders finally get a carbon enduro bike in their 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	170	200	200	200

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

Your questions

Does carbon help on the climbs?	Yes, the lighter frame can be felt on long ascents.
Bike weight?	Not published by Trek; for reference: 15.97 kg in M for the 9.8 XT Di2.
How do I limit bobbing?	Firm up the fork's low-speed compression on the climbs.
Gloss and matte: how to care for them?	A gentle wax-free product suits both finishes.

The LVR Cycles verdict

A carbon Fuel LX that climbs better than the alloy version while keeping 170 mm up front. The glossy carmine and matte black give it an elegant, sporty look.

Pros
+ Lighter carbon frame
+ 30 x 52 gearing
+ Glossy carmine and matte black

Cons
- Weight not published
- Mechanical drivetrain

Why buy from LVR Cycles? As a Trek dealer in Béziers, we set up your carbon Fuel LX for climbing as well as descending, and service the suspension.

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-5351714

Data sheet