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2019 Trek

Top Fuel 8

A 27.5″ / 29″ aluminum frame full suspension crosscountry bike with high-end components.
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Manufacturer Price

$3,149
Weight28.0 lbs  
FrameAluminum
SuspensionFull, 100 / 100mm
ForkRockShox Recon Silver RL
ShockFox Float DPS Performance
Wheels27.5″ / 29″ Aluminum
Drivetrain1 × 12
GroupsetNX Eagle
BrakesShimano Deore Hydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Top Fuel 8
Other Crosscountry 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)

25 mph

Top Fuel 8

27 mph

Similar Bikes

Highest gear

(descending)

Reviews

Summary

The Trek Top Fuel is a lightweight and fast cross-country bike that excels in both climbing and descending, offering precise handling and versatile performance. Its suspension provides excellent support and control, making it suitable for endurance and trail riding. While it maintains the efficiency of a race bike, it has evolved to handle tougher terrain with added stability.

Pros
  • Lightweight and fast

  • Precise and nimble handling

  • Versatile for endurance and trail riding

  • Excellent suspension support and control

  • Rapid acceleration

Cons
  • TwistLoc system issues with locking and complexity

  • Brakes prioritize weight over power

  • Not the most comfortable for all-day rides

  • Tires lose grip in wet conditions

  • No dropper post on some models

Key Quotes
You can ride all day without sweating the climbs.
Bicycling
In one word – fast!
Enduro Mountainbike Magazine logoEnduro Mountainbike Magazine
Trek’s Top Fuel is a XC race weapon.
Whistler Mountain Bike logoWhistler Mountain Bike
The Trek Top Fuel is your passport to a world of fun.
Enduro Mountainbike Magazine logoEnduro Mountainbike Magazine

Feedback?

View all reviews

Mountain Flyer
First Impressions: Trek Top Fuel 9.8 GX

Oct 2020

My history of mountain biking started with a little wooden trike, with no pedals and wheels bigger than my head. I moved forward as any child does onto a bigger bike with bigger wheels and pedals. My parents always encouraged me to get outside and ride a bike, although I didn’t like the idea of mountain biking. I knew how to ride a bike; why go any further?

Read Review

MTBR
Review: Trek Top Fuel 9.9 2020

Apr 2020 · Jordan Villella

- Mtbr.com

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BikeRadar
Trek Top Fuel 9.8 review

Jan 2020 · Ed Thomsett

A front-heavy ride position and not-so-grippy tyres are the only limiters on this all-round speed demon

Highs
  • Makes the climbs fun and rips on the way down

  • An elegant package with a choice of colours

  • The six frame sizes span a massive range

Lows
  • A higher front end would give more descending confidence

  • Thin tyres don’t offer much grip or protection

  • Carbon wheels and bar bump up the price without a big impact on performance

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Mountain Bike Action
First Look Trek Top Fuel - Mountain Bike Action

Oct 2019 · Brandon

The Top Fuel is Trek’s endurance cross-country race machine built to conquer climbs and inspire confidence on descents.

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Bicycling
The Trek Top Fuel Finds Trail Religion and Is Reborn as a Fun Trail Bike

Jun 2019 · Jessica Coulon

The new Trek Top Fuel Pulls the XC-race stick out of its butt and joins the trail bike party.

Highs
  • It's super light and fast as hell.

  • It's versatile—adjust the Mino Link and stem angle to fit your riding style.

Lows
  • TwistLoc system quickly gummed up and functioned inconsistently.

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Whistler Mountain Bike
2019 Trek Top Fuel 9.8 SL 1st Ride Impression

Feb 2019 · Dale Tiessen

Let’s be clear - Trek’s Top Fuel is a XC race weapon. This is not your typical ‘Whistler XC’ bike, which the greater industry may characterize as a ‘trail’ or ‘all mountain’ bike. The Top Fuel is designed for World Cup XC race courses. It is meant to be precise, light and fast.

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MBR
Trek Top Fuel 9 (2017) review - MBR

May 2017 · James Bracey

Swing a leg over the Trek Top Fuel 9 and the first thing you notice is the suspension is keen to get working. It’s a seriously rapid bike on the trails.

Highs
  • Rewarding ride provided by the Re:aktiv suspension.

  • SRAM X1 groupset performed flawlessly.

Lows
  • Handling is marred by the miniscule bar width.

  • Tyres are inappropriate for most British conditions.

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VeloNews
Trek Top Fuel 9.8

May 2016 · Lennard Zinn

The carbon fiber Top Fuel ruled in mountain biking’s mid-2000s heyday, and now it’s back and better than ever. Most importantly, Trek has updated the

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Geometry
Specs
Build
Frame

Alpha Platinum Aluminum, ABP, Full Floater, EVO link, tapered head tube, Mino Link, MicroTruss, internal derailleur and dropper post routing, down tube guard, PF92, Boost148, G2 Geometry on 29ers, 100mm travel

BB StandardBB86/BB92, Press Fit

Fork

RockShox Recon RL, Solo Air, Motion Control damper, TwistLoc remote lockout, tapered steerer, Boost110, G2 Geometry w/51mm offset on 29ers, 100mm travel

Travel100mm

Spring TypeAir

Shock

Fox Performance Float DPS, 2-position remote, tuned by Trek Suspension Lab, 6.5x1.5˝

Travel100mm

Bottom Bracket

SRAM DUB Press Fit, 92mm

Headset

FSA IS-2, 1-1/8˝ top, 1.5˝ bottom

Stem

Bontrager Elite, 31.8mm, 7 degree

Handlebar

Bontrager alloy, 31.8mm, 5mm rise, 720mm width

Saddle

Bontrager Montrose Comp

Seatpost

Bontrager Rhythm Elite, 31.6mm, 0mm offset

TypeRigid

Pedals

Not included

Groupset
Rear Derailleur

SRAM NX Eagle

Crank

SRAM NX Eagle DUB, 32T Direct Mount

Shifters

SRAM NX Eagle, 12 speed

Cassette

SRAM XG-1230 Eagle, 11-50, 12 speed

Chain

SRAM NX Eagle

Brakes

Shimano MT500 hydraulic disc

TypeShimano Deore Hydraulic Disc

Wheels
Rims

Bontrager Kovee Comp 23, Tubeless Ready, Boost110 front, Boost148 rear, tubeless strips included, valves sold separately

Tires

Bontrager XR2 Team Issue, Tubeless Ready, 120 tpi, aramid bead, 29x2.20˝ (13.5 & 15.5: 27.5x2.20˝)

Rider Notes
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First added September 11

Last updated September 11

Not listed for 2,452 days