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2023 Trek

Top Fuel AL Frameset

A 29″ aluminum frame full suspension trail frameset.

Manufacturer Price

$2,399
Weight8.2 lbs (frame)  
FrameAluminum
SuspensionFull, 120mm rear
ShockFox Float DPS Performance
Wheels29″
Where to Buy
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Reviews
Pinkbike
Review: 2025 Trek Top Fuel - More Capable & Adaptable Than Ever

Dec 2024 · Mike Kazimer

We tested almost every single configuration of the new Top Fuel to figure out which one works the best.

Highs
  • Great mix of pedaling and descending capabilities

  • Wide range of effective adjustments

  • Clean looking frame with all the modern amenities

Lows
  • Not as light as you'd expect considering the price

  • Underpowered brakes

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Freehub
Bike Review | Trek Top Fuel

Nov 2024 · Spencer Astra

We’re getting deeper into autumn in the Pacific Northwest. This shift leads to slick trails and cooler temperatures. The new Trek Top Fuel seems to be the perfect companion to scoot around the mountain and dodge puddles. This bike immediately caught my attention, delivering an unexpectedly fun and efficient experience in a sleek, trail-friendly package. With a lightweight, carbon frame and components tuned for speed and control, the Top Fuel has quickly become a bike I look forward to riding.

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NSMB
Trek Top Fuel Long Term

Oct 2024

3 months aboard the 9.8 GX AXS version of Trek's XC-plus, trail-lite, most of the bell curve-targeted Top Fuel

Highs
  • Excellent pedaling and climbing efficiency

  • Cohesive and balanced design

  • Quiet and composed ride

  • Great handling and stability at speed

  • High-quality frame and fit/finish

  • Adjustable geometry via flip-chip

Lows
  • Saddle (Trek Verse Comp) uncomfortable for reviewer

  • Dropper post (Bontrager Line) had fore/aft play

  • Brakes (SRAM Level Bronze) lacked bite on long descents

  • Integrated bar/stem (RSL) stiff, causing hand fatigue

  • Heavy wheelset (~2000g) on a $7000 carbon bike

  • Overall bike weight ~30lbs

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Singletracks
The Trek Top Fuel relies heavily on its climb switch for a ride that’s more XC than DC [Review]

Oct 2024 · Jeff Barber

The Trek Top Fuel is a short-travel mountain bike that tries to do a lot of things, though I found it's really an XC bike at heart.

Highs
  • Efficient pedaling, as long as the climbing is shock set to firm

  • A joy on descents

  • Bontrager components are surprisingly solid

Lows
  • Not as comfortable or playful as other downcountry bikes

  • Fit might be tricky for some riders

  • Can’t get away with leaving the shock open for the whole ride

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BIKE Magazine
Tested: Trek Top Fuel

Sep 2024

A versatile rig that’s down with the country.

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Bike Perfect
Trek’s latest alloy Top Fuel is an awesome short-travel charger – I made some simple changes during testing and made it even better

Aug 2024 · Guy Kesteven

Testing Trek's new alloy Top Fuel at one of the UK's toughest enduro races showed that awesome control and all-round balance can trump high cost and weight. Even more potential is hiding with just a simple tweak too

Highs
  • Excellent keen yet confident handling balance

  • Significantly lighter frame with more user friendly details

  • Suspension goes from great to exceptional with some simple shock surgery

  • Solid spec underlines increased tough trail performance

  • Trek have a great customer service and MTB advocacy/payback reputation

Lows
  • Heavier and more expensive than some carbon competitors

  • Short on rear travel as supplied

  • Fork is outclassed if you extend rear travel

  • Brakes are adequate at best

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Bikerumor
Trek Gen 4 Top Fuel is Faster and More Nimble With DownCountry Adjustability

Jul 2024 · Jordan Villella

The Trek Top Fuel has seen a fair amount of change over the years, from race-only XC, to fun fast trail monster meet the Trek Top Fuel Gen 4

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MBR
Trek Top Fuel 8 review - MBR

Jul 2023 · Alan Muldoon

Think Top Fuel, and the image of a XC race bike instantly springs to mind. But like a faded polaroid tucked into the corner for a dusty picture frame, it’s not an accurate representation of the current design. With the Fuel EX increasing in travel, the Top Fuel has been swept along in its backdraft and seen in high definition, it’s now a capable 29er trail bike with modern sizing and 120mm travel.  Trek offers the new Top Fuel in carbon and alloy options, where the Top Fuel 8 tested here is the high-end alloy build. Regardless of frame material all Top Fuels come with integrated downtube storage. And while the quick release hatch under the bottle cage isn’t big enough to cram a three course lunch into the frame, there’s enough space for a tube, multi-tool, a few snacks and a lightweight jacket.  Frame Trek always offers a comprehensive size range; and with frame options from S to XXL, with a tweener M/L option too, the Top Fuel 8 is no exception. It also has geometry adjustment, but rather than having Trek’s signature Mino Link on the seat stay pivot, the Top Fuel has a flip chip at the lower shock mount. In the low setting this gives a relatively tall 340mm BB height for a 120mm bike, which is probably the only carryover from its race-bike roots – designed to let you keep the cranks spinning, and the speed high at all times. Best down-country mountain-bike: short travel full-suspension The rest of the Top Fuel’s vital stats are on the money though, where a slack 65.6º head angle and steep 77.2º effective seat tube angle make it easy to hammer up the climbs and shred the descents.  It’s built solid too, the complete bike tipping the scales at 14.89kg. It also comes with a combined rider and bike weight limit of 136kg (300lb) so it’s clearly no wet noodle. Yes, it’s not the lightest for a 120mm bike, and not far off what you’d expect for a 150mm bike, but that’s the price you pay for integrated storage, as the alloy down tube needs reinforcing when you cut a hole in it. Thankfully, the Top Fuel 8 rides light, as there’s less travel to pull through to get the bike off the ground, so it offers a different ride experience to modern long-travel trail bikes which tend to have one eye on enduro racing.  Suspension There are no sag gradients on the 130mm travel RockShox Pike fork, which we assume is down to cost saving, but set-up is still really straightforward with a tape measure to hand. And while the Pike has a reputation for having a sporty, firmer tune, the basic RC version on the Trek felt smooth and composed in all situations. Yes, the RC damper has a very wide range of rebound adjustment, but there’s only a small range that’s actually usable, but it is enough to get the rebound just so; and that’s all …Continue reading »

Highs
  • Poppy, playful and efficient. Available in six frame sizes. Internal down tube storage. Mino Link flip chip allows geometry tweaks.

Lows
  • Needs a 180mm rear rotor. Accurate rear shock set up is crucial. A solid build so not the lightest in its class.

Read Review

Geometry
Specs
Build
Frame

Aluminum frame

Tire Clearance2.5"

ColorMulsanne Blue

Shock

Fox Performance Float DPS, 3-position damper, 185mm x 50mm

Travel120mm

Headset

Knock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom

Stem

Bontrager Elite, 35mm, 0 degree, 45mm length

Wheels
Tires

Frame: 29x2.50"

Rider Notes
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First added July 1

Last updated June 27

Not listed for 1,067 days