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Carbon full-suspension mountain bike Trek Fuel EX 9.8 XT Di2 gloss chameleon green/matte black 12-speed

Carbon full-suspension mountain bike Trek Fuel EX 9.8 XT Di2 chameleon green: wireless Shimano, 145/150 mm

$11,014.72 Incl. Tax

Color

Black and green

Size

Size charts

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Trek Fuel EX 9.8 XT Di2 Chameleon Green: wireless, Shimano style

The Trek Fuel EX 9.8 XT Di2 Gen 7 is the Shimano wireless option in the carbon Fuel EX range, alongside the SRAM-equipped 9.9 X0 AXS. It uses the OCLV Mountain frame, 145 / 150 mm Fox Factory suspension and four-piston XT brakes. Trek has not published a weight for this version; reference: the 9.8 XT, with the identical carbon frame, weighs 15.28 kg in size M. Gloss Chameleon Green/Matte Black pairs a shifting glossy green with matt black.

Technical specifications

Frame	OCLV Mountain carbon, integrated storage, adjustable progression, threaded BSA 73, ISCG 05, UDH hanger, Boost
Suspension	Fox Factory 36 GRIP X2 150 mm / Fox Factory Float X 145 mm
Drivetrain	Wireless Shimano XT Di2 1x12, long-cage M8250 derailleur, XT M8200 30T chainset, XT M8200 10-51 cassette
Brakes	Shimano XT M8220 4-piston hydraulic, RT86 203 mm (front) and 180 mm (rear) rotors
Wheels / tyres	Bontrager Line Comp 30 aluminium / Maxxis Minion DHF (front) and DHR II (rear) 2.5, EXO+, 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, 150 to 200 mm depending on size
Weight	Weight not published by Trek for this version; reference: Fuel EX 9.8 XT, identical carbon frame, 15.28 kg in size M

At a glance

✓ OCLV Mountain frame with hatch	✓ Wireless Shimano XT Di2 M8250
✓ Fox Factory, 145 / 150 mm	✓ 10-51 cassette, 12 speeds
✓ 4-piston XT M8220 brakes	✓ Weight not published (reference 15.28 kg)

Who is it for?

For the mountain biker torn between the two wireless ecosystems who prefers the Shimano world, its shift feel and its XT brakes. It will suit riders who already own Shimano kit and want to keep the same habits.

The LVR workshop view

OCLV carbon, Trek's signature. OCLV refers to the moulding method Trek has applied to its fibres for more than thirty years: compaction under pressure and at high temperature that eliminates internal voids. Its Mountain version is designed for off-road riding, with a layup that prioritises strength against impacts. Combined with the Gen 7 Fuel EX, this carbon brings the frame kit down to 3.31 kg in M, 1.64 kg less than the aluminium version, with Trek's lifetime warranty.

	OCLV Mountain (Fuel EX 9.8 / 9.9)	Alpha NEXT Platinum (Fuel EX 5 to 9)	Road OCLV (Madone, Domane)
Level	The carbon Trek reserves for mountain biking	The pinnacle of Alpha aluminium	Road range, from OCLV 500 to 900
Construction	OCLV, impact resistance first	Tubes formed under fluid pressure	OCLV, weight-to-stiffness ratio first
Fuel EX frameset (M)	3.31 kg	4.95 kg	not relevant for MTB
What it means	Lighter bike, lifetime warranty	Heavier but durable frame	Material designed for tarmac

In short: the 9.8 XT Di2 shares its frame, suspension, brakes and wheels with the 9.8 XT; only the derailleur changes, to wireless and electronic. Trek does not publish a weight for this version, so the 9.8 XT at 15.28 kg in M remains the most accurate reference.

The two wireless drivetrains each have their own logic: Shimano keeps a two-lever shifter close to the mechanical version, SRAM AXS uses a rocker paddle. The choice comes down to feel; in the shop, we let you try both shifters before deciding.

For brakes, the 9.8 XT Di2 sticks with mineral-oil Shimano XT M8220, with a 203 mm front rotor; the 9.9 X0 AXS uses SRAM Maven brakes, with their own pads and bleed kits. If you do your own maintenance, staying within one ecosystem simplifies your stock of parts.

Which Fuel should you choose?

Model	Frame	Travel rear / front	Drivetrain	Weight (M)
Fuel EX 9 XT Di2	Alpha NEXT Platinum alloy	145 / 150 mm	Wireless Shimano XT Di2	16.88 kg
Fuel EX 9.8 XT	OCLV Mountain carbon	145 / 150 mm	Mechanical Shimano XT	15.28 kg
Fuel EX 9.8 XT Di2	OCLV Mountain carbon	145 / 150 mm	Wireless Shimano XT Di2	not published
Fuel EX 9.9 X0 AXS	OCLV Mountain carbon	145 / 150 mm	Wireless SRAM X0 Eagle AXS	14.08 kg

Our take: the 9.8 XT Di2 and the 9.9 X0 AXS are the two wireless carbon Fuel EX models: Shimano and Fox on one side, SRAM, RockShox and carbon wheels on the other, for 14.08 kg in M. The aluminium Fuel EX 9 XT Di2 weighs 16.88 kg.

LVR sizing advice

If you are between two sizes, the smaller one suits you if you like to place the bike and jump, the larger one if you mainly ride fast and long. Dropper post travel follows size, and the S gets a 27.5-inch rear wheel.

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
Wheels front / rear (in)	29 / 27.5	29 / 29	29 / 29	29 / 29	29 / 29

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

Your questions

Shimano Di2 or SRAM AXS?	A matter of feel: two levers with Shimano, a rocker with SRAM; try the shifters in the shop.
Mixing brands?	Possible, but staying with Shimano simplifies maintenance and the stock of parts.
Firmware to update?	Yes, from time to time; we do it at every service.
Is the green uniform?	No, the chameleon green changes its glints with the angle of the light.

The LVR Cycles verdict

The wireless carbon Fuel EX for Shimano loyalists, with XT brakes and Fox suspension. Its glossy chameleon green over matt black gives it real presence.

Pros
+ Coherent Shimano ecosystem
+ XT brakes with 203 mm rotor
+ Chameleon green with shifting glints

Cons
- Aluminium wheels compared with the 9.9
- Weight not published

Why buy from LVR Cycles? As a Trek dealer in Béziers, we let you try the Shimano and SRAM shifters in the shop, then configure and service your Fuel EX Di2.

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-5355954

Data sheet