2021 Trek

Top Fuel 7 SX

A 29″ aluminum frame full suspension crosscountry bike with upper mid-range components.
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MSRP$2,999
Weight31.2 lbs  
FrameAluminum
SuspensionFull, 115 / 120mm
ForkRockShox Judy
ShockX-Fusion
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetSX Eagle
BrakesHydraulic Disc
SeatpostDropper
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Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Top Fuel 7 SX
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 7 SX

27 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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Reviews
Bike Perfect
Trek Top Fuel 8 review: a progressive rather than podiuming XC machine

Mar 2022 · Guy Kesteven

Trek’s Top Fuel delivers superlative short-travel suspension performance but it’s definitely a trail bike not an XC bike

Highs
  • Infectiously agile and playful vibe

  • Superlative suspension feel

  • Seriously tight tracking frame

  • Trail tough kit

  • Internal storage

Lows
  • Too heavy for XC racing

  • Simple fork damper

  • Tight internal storage access

  • Yawning gap between this and the Supercaliber

Read Review

NSMB
2022 Trek Top Fuel

Feb 2022

Shore Country? Dad Country? No no, this one is "fast trail"

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BikeRadar
Trek Top Fuel 8 review

Dec 2021 · Will Soffe

Impressively playful characteristics, progressive geometry and solid build, despite lacking the outright pace of XC-derived competitors

Highs
  • Effective suspension gives suppleness and support

  • Confidence-inspiring geometry beyond XC-derived counterparts

  • A riotous blend of capability and playfulness

Lows
  • The robust frame means it’s heavier than its rivals

  • A flexy fork is the only weak spot in a bullet-proof build

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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

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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

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Flow Mountain Bike
2022 Trek Top Fuel Review | All-new frame & geometry, with a whole new attitude

Oct 2021

The Trek Top Fuel has been overhauled for 2022, receiving an all-new frame with integrated storage, plus key updates to the suspension design and geometry. So how does it ride on the trail? And will everyone be pleased with all the changes? Read on for our Trek Top Fuel review.

Highs
  • Brilliant trail-ripping geometry

  • Active and supportive suspension

  • Masses of cornering grip & stability

  • Refined and practical frame design

  • Downtube storage is a welcome addition

Lows
  • Dropper post is sluggish

  • Wheels are solid but quite heavy

  • Carbon bars are harsh

  • Heavier than many of its competitors

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

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

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

BB StandardBB86/BB92, Press Fit

Tire Clearance2.4"

ColorLithium Grey / Trek Black

Fork

RockShox Judy SL, Solo Air spring, Motion Control damper, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel

Travel120mm

Spring TypeAir

Shock

X-Fusion Pro 2, 190x45 mm

Travel115mm

Spring TypeAir

Bottom Bracket

SRAM DUB, 92 mm, PressFit

Headset

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

Stem

Size: S, M, M/L, Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length; Size: L, XL, XXL, Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length

Handlebar

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

Saddle

Bontrager Arvada, steel rails, 138 mm width

Seatpost

Size: S, TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length; Size: M, M/L, L, XL, XXL, TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length

TypeDropper

Grips

Bontrager XR Trail Comp, nylon lock-on

Groupset
Rear Derailleur

SRAM SX Eagle

Crank

Size: S, SRAM SX Eagle, DUB, 32T steel ring, Boost, 170 mm length; Size: M, M/L, L, XL, XXL, SRAM SX Eagle, DUB, 32T steel ring, Boost, 175 mm length

Shifters

SRAM SX Eagle, 12-speed

Cassette

SRAM PG-1210 Eagle, 11-50, 12-speed

Chain

SRAM SX Eagle, 12 speed

Brakes

Shimano MT200 hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve

Front Hub

Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle

Tires

Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29 x 2.40"

Disc Rotors

Size: S, M, M/L, L, XL, XXL, Shimano RT26, 6-bolt,180 mm; Size: S, M, M/L, L, XL, XXL, Shimano RT26, 6-bolt,160 mm

Rider Notes
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Last updated March 23