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2020 Trek

Top Fuel 8

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

$3,299
Weight30.1 lbs  
FrameAluminum
SuspensionFull, 115 / 120mm
ForkRockShox Recon Gold RL
ShockFox Float DPS Performance
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetNX Eagle
BrakesShimano Deore Hydraulic Disc
SeatpostDropper
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 celebrated for its exhilarating speed, versatility, and fun factor, making it a standout in the cross-country category. It's lightweight yet capable, with a design that balances race heritage with modern geometry for improved stability and confidence on trails. While some riders find the suspension too harsh or the head angle too steep, the overall sentiment is overwhelmingly positive, highlighting its superb trail performance and climbing efficiency.

Pros
  • Fast and exhilarating speed

  • Lightweight yet capable design

  • Versatile for various trail conditions

  • Improved stability and confidence with modern geometry

  • Superb trail performance and climbing efficiency

Cons
  • Suspension may feel too harsh for some

  • Head angle considered too steep by some

  • High cost for higher-end models

Key Quotes
This sub-25-pound 'boat anchor' is fast as hell.
BIKE Magazine logoBIKE Magazine
For rapid mile-munching that doesn’t get in the way of enjoyment on the descents, the Top Fuel is hard to beat.
BikeRadar logoBikeRadar
With the Trek Top Fuel 9.8, I feel much more stable on the downhill and enjoy it much more than my previous bikes.
Mountain Flyer logoMountain Flyer
This bike is exactly what the new generation of aggressive cross-country racers needs.
MTBR logoMTBR

Feedback?

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Pinkbike
Field Test Review: 2022 Trek Top Fuel - Same Name, Different Bike

Dec 2021 · Henry Quinney

For a bike that is so capable on the descents, though, the Top Fuel still packs a mighty punch when it comes to gaining elevation..

Highs
  • Great suspension performance

  • Frame storage

  • Strong climbing performance

Lows
  • Knockblock isn't as well executed as other brand's versions

  • Works well when pushing hard, but might not be the most comfortable for all

Read Review

Beta
Trek Introduces the New Top Fuel

Oct 2021 · Ryan "Squirrel" LaBar

Adding fire to the Fuel

Read Review

MBR
Trek Top Fuel 8 review: brings in-frame storage to aluminium bikes - MBR

Oct 2021 · Danny Milner

New Trek Top Fuel 8 is a short travel - 120mm travel front and rear - down-country trail bike with internal frame storage for both alloy and carbon models.

Highs
  • Sublime suspension, playful handling, fantastic size range, internal storage

Lows
  • Not particularly light for the intended use, inconsistent Shimano brakes on our test bike

Read Review

Enduro Mountainbike Magazine
Trek Top Fuel 9.9 X01 2021 in review - From XC-racer to our trail bike group test

Jun 2021 · Peter Walker

The Top Fuel 9.9 flies through singletrack and rips descents, but it really shines when pushed to its full potential during gruelling endurance races.” That's what Trek say about the Fuel 9.9 X01, but how did it fare against its bigger brother, the Fuel EX, in our test?

Highs
  • Accelerates willingly

  • Easy, intuitive handling

Lows
  • Bontrager XR3 tires generate poor traction

  • Remote cluster in the cockpit area is confusing

  • Odd-looking spacer tower

  • No Trek storage compartment

  • Very few advantages over the Fuel EX, which suits a much wider range of applications

Read Review

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

Read Review

Mountain Bike Action
MBA Bike Test: Trek Top Fuel 9.9

Feb 2020 · McCoy

Outgrowing its cross-country heritage

Read Review

BIKE Magazine
Bible Review: Trek Top Fuel 9.9

Jan 2020

The new Top Fuel is still very much an XC machine. It's also damn fun and vastly more versatile than we expected.

Read Review

Geometry
Specs
Build
Frame

Alpha Platinum Aluminum, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel

BB StandardBB86/BB92, Press Fit

Tire Clearance2.4"

ColorsPurple Phaze / Dnister Black; Matte Trek Black / Gloss Viper Red

Fork

RockShox Recon Gold RL, Solo Air spring, Motion Control damper, TwistLoc remote, tapered steerer, 46mm offset, Boost110, 15mm Maxle Stealth, 120mm travel

Travel120mm

Spring TypeAir

Shock

Fox Performance Float, 2-position DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45mm

Travel115mm

Bottom Bracket

SRAM DUB, 92mm, PressFit

Headset

Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom

Stem

Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree, 70mm length

Handlebar

Bontrager Comp, alloy, 31.8mm, 15mm rise, 750mm width

Saddle

Bontrager Arvada, steel rails, 138mm width

Seatpost

Bontrager Line Dropper, 150mm travel, internal routing, 31.6mm, 440mm length

TypeDropper

Groupset
Rear Derailleur

SRAM NX Eagle

Crank

SRAM NX Eagle, DUB, 32T steel ring, Boost (52mm chainline), 175mm length

Shifters

SRAM NX Eagle, 12 speed

Cassette

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

Chain

SRAM NX Eagle, 12 speed

Brakes

Shimano hydraulic disc, MT501 lever, MT500 caliper

TypeShimano Deore Hydraulic Disc

Wheels
Rims

Front: Bontrager Kovee Comp 23, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, Rear: Bontrager Kovee Comp 23, Tubeless Ready, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru axle

Tires

Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''

Disc Rotors

Size: L, Shimano RT56, 180mm, 6-bolt; Size: L, Shimano RT56, 160mm, 6-bolt

Rider Notes
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First added October 10

Last updated July 25

Not listed for 1,769 days