2018 Trek

Fuel EX 9.8 27.5 Plus

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

$4,999
Weight29.0 lbs  
FrameCarbon
SuspensionFull, 130 / 140mm
ForkFox Performance Float 34
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle, Truvativ Descendant
BrakesHydraulic Disc
SeatpostDropper
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Fuel EX 9.8 27.5 Plus
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 9.8 27.5 Plus

26 mph

Similar Bikes

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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BikeRadar
Trek Fuel EX 7 29 review

Jun 2018 · Russell Eich

Trek's Fuel EX 7 29er contains modern bike technology with a classic ride feel. Buy if you want your new bike to feel similar to your old bike but drastically improved in every way

Highs
  • Excellent rear suspension, sharp looks, modern tech, name brand notoriety

Lows
  • Narrow, flat bar, short top tube, front suspension can’t keep up with rear end

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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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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.

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

OCLV Mountain Carbon main frame & seatstay, alloy chainstay, ABP, Boost148, Knock Block steerer stop, Full Floater, EVO link, E2 tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, PF92, ISCG 05, G2 Geometry, 130mm travel

BB StandardBB86/BB92, Press Fit

Fork

Fox Performance 34 Float, GRIP 3-position 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 Pro, Knock Block, 35mm clamp, 0 degree, 60mm length

Handlebar

Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width

Saddle

Bontrager Evoke 3, titanium 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 7k 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 RS hydraulic disc

TypeHydraulic Disc

Wheels
Rims

DT Swiss M1900, 40mm rim width, Boost110 front, Boost148 rear, tubeless strips and valves included

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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