2018 Trek

Fuel EX 8 27.5 Plus

A 27.5″ aluminum frame full suspension trail bike with high-end components.
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Manufacturer Price

$3,349
Weight32.0 lbs  
FrameAluminum
SuspensionFull, 130 / 140mm
ForkFox Rhythm Float 34
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle, Truvativ Descendant
BrakesHydraulic Disc
SeatpostDropper
Where to Buy
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Insights
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 8 27.5 Plus

26 mph

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Highest gear

(descending)

Reviews
Outdoor Gear Lab
Trek Fuel EX 8

Nov 2019 · Jeremy Benson

The Fuel EX 8 is an impressively capable, versatile, and well-rounded trail bike that is ready for anything you are. Trek redesigned the Fuel EX models for...

Highs
  • Relatively affordable

  • Good component spec for the price

  • Great small bump compliance

  • Versatile/well-rounded

Lows
  • Frame sizing feels a little small

  • Can be overwhelmed in super aggressive terrain

Read Review

Pinkbike
Review: Trek's All-New 2020 Fuel EX Trail Bike

Aug 2019 · Mike Levy

Trek's trail bike gets an all-new frame with tweaked suspension and fresh geometry, but where does sit compared to the competition?

Highs
  • Forgiving, deep feeling suspension

  • It's a wizard on technical climbs

  • New geometry increases capabilities

Lows
  • It might be too forgiving for some riders

  • You'll be using the pedal assist lever often

  • Trek could have gone further with the geometry

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Cyclist
Trek Fuel EX 5 full suspension MTB review

Oct 2018 · Joseph Delves

A great full-sus all-rounder with an innovative frame

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Loam Wolf
Review: Fuel EX 9.7 29

Jun 2018 · Nic “U-Turn” Hall

Without a doubt one of our favorite bikes in the budget bike roundup. The Trek Fuel EX 9.7 blends a refined look with affordable performance to offer you a killer mountain bike at a great value.

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VeloNews
Trek Fuel EX 9.9

Mar 2018 · Emily Schaldach

The Trek Fuel EX 9.9 has redefined the do-everything mountain bike.

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off.road.cc
Trek Fuel EX 5 Women’s 27.5 Plus

Nov 2017

While this Trek Fuel EX 5 may look like a roller skate on wheels, complete with disco-tastic 'anthracite' metallic grey finish and chunky platform shoes reminiscent of the Spice Girls’ heyday, it does cover a particular niche between ‘trail’ and ‘cross-country’, and it does it very well on a respectable budget. Review: Banshee Phantom GX - a short travel machine with hardcore intentions Buying your first mountain bike?

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BikeRadar
Trek Fuel EX 8 29 (2018) review

Nov 2017 · Guy Kesteven

Fork needs tweaking, but still a super-versatile, efficient and seriously hench high-speed hauler. Buy if you're looking for plenty of speed and a bike that can technical up and downs too

Highs
  • Massively-stiff, progressively-shaped frame

  • Shock and wheels breed free rough-terrain speed

  • Well-matched, very effective componentry for the money

Lows
  • 2018 Fox Rhythm fork needs tuning to do the rest of the ride justice

  • Press-fit bottom brackets can wear fast

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Freehub
2017 Trek Fuel EX 9.8 // Bike Review

Nov 2017 · Will Hilbert

Take a look at the new Fuel EX and you will quickly see Trek has fully redefined the model. The 2016 Fuel Ex 29 was a step in the right direction, but it was a timid half-hearted step that left the rider wondering what if…? What if it came spec’d with a stiffer fork, more travel and a slacker headtube? The team at Trek delivered and the 2017 bike answers these questions. It now allows the use of 29” or 27.5+ wheels and is one of the stiffest frames in the category, featuring a totally new geometry that’s slacker and longer than its predecessor.

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99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Alpha Platinum Aluminum, ABP, Boost148, Knock Block steerer stop, Full Floater, EVO link, E2 tapered head tube, Mino Link, Control Freak internal routing, down tube guard, PF92, ISCG 05, G2 Geometry, 130mm travel

BB StandardBB86/BB92, Press Fit

Fork

Fox Rhythm 34 Float, GRIP adjustable damper, E2 tapered steerer, G2 Geometry w/51mm offset, Boost110, 140mm travel

Travel140mm

Spring TypeAir

Bottom Bracket

PF92

Headset

Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom

Stem

Bontrager Line, Knock Block, 35mm clamp, 0 degree, 60mm length

Handlebar

Bontrager Line, 35mm, 15mm rise, 750mm width

Saddle

Bontrager Evoke 2, chromoly rails

Seatpost

Bontrager Drop Line, internal routing, 31.6mm (15.5: 100mm / 17.5 & 18.5: 125mm / 19.5 & 21.5: 150mm)

TypeDropper

Pedals

Not included

Grips

Bontrager Race Lite, lock-on

Groupset
Rear Derailleur

SRAM GX Eagle, Roller Bearing Clutch

Crank

SRAM Descendant 6k Eagle, 32T Direct Mount X-Sync

Shifters

SRAM GX Eagle, 12 speed

Cassette

SRAM XG-1275, 10-50, 12 speed

Chain

SRAM GX Eagle

Brakes

SRAM Guide R hydraulic disc

TypeHydraulic Disc

Wheels
Rims

SUNringlé Duroc 40 SL 28-hole, tubeless strips and valves included

Front Hub

Bontrager sealed bearing, alloy axle, Boost110

Rear Hub

Bontrager sealed bearing alloy axle, Boost148

Tires

Schwalbe Nobby Nic Performance w/Addix compound, Tubeless, 27.5x2.80˝

Rider Notes
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Last updated February 15
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