2022 Trek Fuel EX 9.8 GX

A 27.5″ / 29″ carbon frame full suspension trail bike with high-end components, priced near the middle of the Fuel EX model range. Compare the full range

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2022 Trek Fuel EX 9.8 GX
MSRP$6,499
Weight28.9 lbs
SuspensionFull
Travel130mm rear, 140mm front
FrameCarbon
ForkFox Performance Float 36
Wheels27.5″ / 29″ Carbon
Tire Clearance2.6"
Drivetrain1 × 12
GroupsetGX Eagle
BrakesHydraulic Disc
SeatpostDropper post

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Gearing

1 × 12 — 12 speed

Fuel EX 9.8 GX

26 mph

Similar Bikes

26 mph

The Fuel EX 9.8 GX is easier to ride up hills than similar bikes.

The Fuel EX 9.8 GX is geared about the same as similar bikes for riding downhill.


Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

Spec level →$0$1,000$2,000$3,000$4,000$5,000$6,000
This bike
Other trail bikes

Reviews

October 2020

Gran Fondo
Trek Fuel EX 9.9 XTR Project One in bikepacking review

The Trek Fuel EX 9.9 is an absolute classic in the trail bike segment. Could it also be the perfect bike for the next bikepacking adventure with its modern geometry and spare parts compartment in the down tube? We put the Fuel EX to the test.

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June 2020

Freehub
2020 Trek Fuel EX 9.9 // Bike Review

As warmer temperatures hit the Pacific Northwest and the dirt starts to dry, I’m always eager to get out on some long rides with some big climbs. Naturally, when this Trek Fuel EX 9.9 showed up at the Freehub office, I knew it was time to put the nimble beast through its paces. I challenged myself to a 60-mile sufferfest on some of Bellingham, Washington’s toughest climbs and descents. It definitely didn’t let me down. Climbing on this bike was a joy. Trek equipped the 9.9 model with its proprietary RE:aktiv shock with a three-position damper, which I left wide open for the entire ride. The rear suspension had an overwhelmingly supportive feel while pedaling out of the saddle, yet as soon as I hit a bump it dived deeper into the travel, keeping the rear wheel firmly planted and providing excellent traction. The geometry is modern and balanced, with a long reach and a sensible 76-degree seat angle. On the descents, the bike inspired confidence, thanks to its long wheelbase and bottomless-feeling suspension. My confidence was further enhanced by the reliable stopping power of the Shimano XT brakes. As a 200-pound rider, I couldn’t have appreciated the ultra-powerful XT brakes and the 203-millimeter front rotor more—especially while bombing down some of Bellingham’s scariest double-black trails.

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April 2020

Mountain Bike Action
Mountain Bike Action Bike Test: Trek Fuel Ex Trail Bike

Can it get any better than this?

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April 2020

BikeRadar
Trek Fuel EX 9.7 review

A classic trail bike, with a fun and engaging ride built around a solid frame

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April 2020

Flow Mountain Bike
9 Lessons We've Learned About Our 2020 Trek Fuel EX 9.8 Test Bike

After six months of testing, it's time to the deliver the review of our 2020 Trek Fuel EX 9.8 long-term test bike. Here we take a closer look at some of the other parts we've changed and the problems we've encountered, and discuss exactly what this 130mm travel trail bike does best.

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November 2019

MBR
Trek Fuel EX 9.8 review - MBR

The updated Trek Fuel EX now features storage in the downtube, 29er wheels, more travel and a gorgeous frame… oh and it’s rollicking fast too.

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August 2019

BIKE Magazine
First Ride: 2020 Trek Fuel EX 9.9

This is not what it looks like. Even though this new Fuel EX has a Fox 36, it doesn’t mean it has shed its trail-bike past for an enduro-bike future. Even

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August 2019

ENDURO Mountainbike Magazine
First ride review: the new Trek Fuel EX 9.9 2020 – longer, faster and even better?

First ride review of the new Trek Fuel EX 9.9 2020 – details, weight, pricing and highlights of the new bike here!

Read Full Review


Geometry

Specs
Build
Frame

OCLV Mountain Carbon main frame & stays, internal storage, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel; OCLV Mountain Carbon main frame & stays, internal storage, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel

BB StandardBB86/BB92, press-fit

Tire Clearance2.6"

Fork

Fox Performance 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel

Rear Shock

Size: XS, S, Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210mm x 52.5mm; Size: S, M, ML, L, XL, Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210mm x 55mm

Bottom Bracket

SRAM DUB, 92mm, PressFit

Headset

Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom

Stem

Size: XS, S, Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 35mm length; Size: M, ML, L, XL, Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 45mm length

Handlebar

Size: XS, S, Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width; Size: XS, S, M, ML, L, XL, Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width

Saddle

Bontrager Arvada, austenite rails, 138mm width

Seatpost

Size: XS, S, Bontrager Line Elite, 100mm travel, MaxFlow, internal routing, 31.6mm, 340mm length; Size: XS, S, Bontrager Line Elite Dropper, 100mm travel, internal routing, 31.6mm, 340mm length; Size: M, ML, Bontrager Line Elite, 150mm travel, MaxFlow, internal routing, 31.6mm, 440mm length; Size: M, ML, Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6mm, 440mm length; Size: L, XL, Bontrager Line Elite, 170mm travel, MaxFlow, internal routing, 31.6mm, 480mm length; Size: L, XL, Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6mm, 480mm length

Grips

Size: XS, S, M, ML, L, XL, Bontrager XR Trail Elite, nylon lock-on; Size: XS, S, M, ML, L, XL, Bontrager XR Trail Elite, alloy lock-on

Groupset
Rear Derailleur

SRAM GX Eagle

Crank

Size: XS, S, M, ML, L, SRAM GX Eagle, DUB, 30T alloy ring, Boost (52mm chainline), 170mm length; Size: S, M, ML, L, XL, SRAM GX Eagle, DUB, 30T alloy ring, Boost (52mm chainline), 175mm length

Shifters

SRAM GX Eagle, 12 speed

Cassette

SRAM Eagle XG-1275, 10-52, 12 speed

Chain

SRAM GX Eagle, 12 speed

Brakes

SRAM G2 RS 4-piston hydraulic disc

Wheels
Rims

NEW Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle

Tires

Size: XS, S, Bontrager XR5 Team Issue, Tubeless Ready, aramid bead, 120 tpi, 27.5x2.50''; Size: XS, S, M, ML, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120tpi, 29.x2.40''; Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.60''; Size: S, M, ML, L, XL, Bontrager XR5 Team Issue, Tubeless Ready, aramid bead, 120 tpi, 29x2.50''; Size: S, M, ML, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60''

Disk Rotors

Size: XS, S, M, ML, L, XL, SRAM CenterLine, 6-bolt, round edge, 180mm; Size: M, ML, L, XL, SRAM CenterLine, 6-bolt, round edge, 200mm

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