2022 Trek

Fuel EX 9.9 XTR

A 27.5″ / 29″ carbon frame full suspension trail bike with ultra high-end components.
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MSRP$9,549
Weight27.8 lbs  
FrameCarbon
SuspensionFull, 130 / 140mm
ForkFox Factory Float 36
ShockFox Float X Factory
Wheels27.5″ / 29″ Carbon
Drivetrain1 × 12
GroupsetXTR
BrakesHydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Fuel EX 9.9 XTR
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

26 mph

Fuel EX 9.9 XTR

26 mph

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Highest gear

(descending)

Spec Level

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

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Reviews
Revolution Mountain Bike Magazine
[R]eviewed // Trek Fuel EX

Jun 2023 · Scotty Prendergast

Arguably one of the all-time most popular bike models of any MTB on the planet, the ‘Fuel Ex’ has been at the peak of Trek’s MTB line-up for as long as anyone can remember and it has had no fewer than six major design overhauls during that time. Late last year Trek unveiled their newest reinvention of the ‘do it all trail bike’ which rolls out of the store boasting a ton of rider customisation features, including a choice of [...]

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Outdoor Gear Lab
Trek Fuel EX 9.8 GX AXS Gen 6

May 2023 · Jeremy Benson

The new Gen 6, Fuel EX 9.8 is the burliest, most versatile, and most capable Fuel yet; truly up for whatever you want to ride. Trek completely redesigned...

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Loam Wolf
Review: Trek Fuel EX 9.9 XX1

Apr 2023 · Drew Rohde

While the new Trek Fuel EX may have alienated a few riders, it will no doubt be a welcome redesign for a lot more riders!

Highs
  • Fast, confident and ready to rock!

  • More capable than ever

  • Great downtube storage solution

  • Adjustable and versatile geometry options

  • Med/Large size

Lows
  • Bar/Stem combo

  • SE5 Tires in the wet

  • Some may not like the newer, burlier bike’s transition

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MTB Mag
[Dream Bike] Trek Fuel EX

Dec 2022 · Ian Collins

A couple months ago, I was on the hunt for a new mid-travel personal bike and found myself largely unconvinced by most of the offerings on the market. Then a new, highly adjustable and longer in the tooth Trek Fuel EX was announced. When I reached out to Trek to inquire about testing one they offered to send a frameset for me to build out. On paper given that it had my ideal geometry, loads of adjustments (including leverage rate!), internal storage and the options of  air or coil and mullet or straight 29″, this was the ultimate Swiss army

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Pinkbike
Field Test: Trek Fuel EX - Evolution Underlined

Dec 2022 · Mike Levy

The downtube storage compartment is on the new bike, and while it seems like Trek has put all the things onto the latest Fuel EX, there's one that they didn't: Knock Block.

Highs
  • Wide range of effective geometry adjustments

  • Just as much fun on smooth trails as it is on scary trails

  • Great climber, efficient pedaling

Lows
  • One-piece handlebar might be too stiff for some riders

  • Paint chips easily

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Bicycling
The New Trek Fuel EX Puts On Weight, Punches Harder, and Expands Its Reach

Sep 2022

New geometry, more travel, and even better suspension improves Trek's mid-weight trail bike.

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Bike Perfect
Trek Fuel EX 9.9 XX1 AXS – a brilliantly balanced all-rounder at an eye-watering cost

Sep 2022 · Guy Kesteven

More travel, longer, slacker and steeper, with extra adjustability and shock options. But how does Trek’s new trail all-rounder ride?

Highs
  • Superbly balanced adjustable geometry

  • Awesome suspension performance in ‘progressive’ mode

  • Poppy, playful and fast-climbing for its weight

  • Truly premium wireless, Fox Factory, carbon-loaded spec

  • Lifetime warranty, threaded BB and tunneled routing

Lows
  • Heavy for spec and travel

  • Costs more than parts sold separately

  • Default shock set-up is too linear

  • Headset adjustment is laborious

  • XX1 is fragile for aggro trail use

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Bikerumor
2023 Trek Fuel EX 9.9 XX1 AXS review: A widely capable trail bike with a high-end build

Sep 2022

Trek's top-tier Fuel EX 9.9 XX1 AXS delights on the climbs and tackles downhill terrain with it's slack (and very adjustable) geometry.

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Carbon frame

BB StandardBB86/BB92, Press Fit

Tire Clearance2.6"

ColorsRaw Carbon / Rage Red; Lithium Grey / Factory Orange; Matte Carbon Smoke

Fork

Fox Factory 36, Float EVOL air spring, GRIP2 damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel

Travel140mm

Spring TypeAir

Shock

Size: XS, S, Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x52.5mm; Size: S, M, ML, L, XL, Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x55mm

Travel130mm

Spring TypeAir

Bottom Bracket

Shimano MT500, 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

Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width

Saddle

Bontrager Arvada Pro, carbon rails, 138mm width

Seatpost

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

TypeDropper

Grips

Bontrager XR Trail Elite, alloy lock-on

Groupset
Rear Derailleur

Shimano XTR M9100, Shadow Plus, long cage, 51T max cog

Crank

Size: XS, S, Shimano XTR M9120, 30T alloy ring, Boost (52mm chainline), 170mm length; Size: M, ML, L, XL, Shimano XTR M9120, 30T alloy ring, Boost (52mm chainline), 175mm length

Shifters

Shimano XTR M9100, 12 speed

Cassette

Shimano XTR M9100, 10-51, 12 speed

Chain

Shimano Dura-Ace/XTR M9100, 12 speed

Brakes

Shimano XTR M9120 4-piston hydraulic disc

TypeHydraulic Disc

Wheels
Rims

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

Tires

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 XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60''

Disc Rotors

Size: XS, S, M, ML, L, XL, Shimano RT86, 6-bolt, 180mm; Size: M, ML, L, XL, Shimano RT86, 6-bolt, 203mm

Rider Notes
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Last updated July 26
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