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2017 Trek

Fuel EX Jr

A 26″ aluminum frame mountain youth bike with upper mid-range components and shimano hydraulic disc brakes.

Manufacturer Price

$1,889
Weight28.9 lbs  
FrameAluminum
SuspensionFull, 90 / 90mm
ForkX-Fusion VELVET
ShockX-Fusion
Wheels26″ Aluminum
Drivetrain2 × 10
GroupsetDeore
BrakesShimano Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Handling
nimblestable
Fuel EX Jr
Other Mountain Youth 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)

23 mph

Fuel EX Jr

Highest gear

(descending)

Reviews

Summary

The Trek Fuel mountain youth bike is praised for its versatile and light trail capabilities, offering a balanced and maneuverable feel suitable for various terrains. Its suspension performance, particularly the RE:aktiv shock with Thru Shaft technology, is highlighted for reducing lag and improving ride quality. However, some reviews note it may be too conservative for aggressive riders and could benefit from a longer dropper post and more aggressive tires.

Pros
  • Versatile and light trail bike

  • Quick-responding ABP suspension platform

  • RE:aktiv shock with Thru Shaft technology

  • Balanced and maneuverable feel

  • Superb rear-wheel traction

Cons
  • Too conservative for some riders

  • Would benefit from a longer dropper post

  • Bontrager XR4 tires' side knobs felt under-gunned

Key Quotes
The Fuel isn’t the biggest and baddest bike of the test. Instead it focuses on being the do-everything quiver killer.
BIKE Magazine logoBIKE Magazine
Imagine taking the heart of an XC race bike and giving it the soul of a trail bike and you’d have the Fuel EX.
Bikerumor logoBikerumor
Not the quickest climber, but clever suspension and geometry provide a fun, fast and capable ride
BikeRadar logoBikeRadar

Feedback?

View all reviews

Cyclist
Trek Fuel EX 5 full suspension MTB review

Oct 2018 · Joseph Delves

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

Read Review

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.

Read Review

VeloNews
Trek Fuel EX 9.9

Mar 2018 · Emily Schaldach

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

Read Review

BIKE Magazine
Bible Review: Trek Fuel EX 9.9

Dec 2017

The Fuel EX 9.9 is a lightweight, 130-millimeter do-everything superbike.

Read Review

Enduro Mountainbike Magazine
Trek Fuel EX 9.9 29 review

Dec 2017 · Christoph Bayer

The Trek Fuel EX 9.9 29 had a lot to lose, as it was defending its title in this comparison. In our last group test, the bike secured the coveted top spot. Since then, Trek has fundamentally reworked the shock – was it enough to win again?

Read Review

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?

Read Review

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

Mountain Bike Action
Tested - Trek Fuel EX 9.8 27.5+

Oct 2017 · MBA Action

Designed Specifically for a Trail Near You It’s not often a company revamps its entire lineup in just one year, but if there’s one company that can do it,

Read Review

Geometry
Specs
Build
Frame

Alpha Gold Aluminum, ABP Convert, Full Floater, E2 tapered head tube, EVO link, 90mm travel

Fork

X-Fusion Velvet RL, air spring, rebound, lockout, E2 tapered steerer, 90mm travel

Travel90mm

Spring TypeAir

Shock

X-Fusion Microlite RL, air spring, rebound, lockout, 152x32mm

Travel90mm

Headset

Integrated, cartridge bearing, sealed, 1-1/8" top, 1.5" bottom

Stem

Bontrager Elite, 31.8mm, 7 degree, Blendr compatible

Handlebar

Bontrager alloy, 25.4mm, 15mm rise

Saddle

Dialed 24" size, padded

Seatpost

Bontrager SSR, 2-bolt head, 31.6mm, 12mm offset

TypeRigid

Grips

Bontrager Race

Groupset
Rear Derailleur

Shimano Deore, Shadow Plus

Front Derailleur

Shimano Deore, high direct mount

Crank

Alloy, 24/32 w/bashguard

Shifters

Shimano Deore, 10 speed

Cassette

Shimano HG50, 11-36, 10 speed

Chain

KMC X10

Brakes

Shimano M315 hydraulic disc

TypeShimano Hydraulic Disc

Wheels
Rims

Bontrager AT-650 32-hole double-walled alloy

Front Hub

Formula DC20 alloy

Rear Hub

Formula DC22 alloy

Tires

Bontrager XR2, 26x2.20"

Rider Notes
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First added April 12

Last updated July 21

Not listed for 3,234 days