Home > Bike Types > Mountain Bike

Trek Top Fuel gets trail rated with longer travel in carbon or alloy

2022 Trek Top Fuel 9.9 XTR full bike
Support us! Bikerumor may earn a small commission from affiliate links in this article. Learn More

The engineers at Trek are refreshing another popular model in less than two years, the long-running Top Fuel. Yes, this mountain bike just recently received an overhaul, but the Trek team decided it could be even better and more fun… as a longer travel, more capable trail bike!

2022 Trek Top Fuel mountain bike goes trail riding

Payson McElveen on the new Trek Top Fuel in Durango
c. Trek

Trek introduced their Top Fuel all the way back in 2005. The bike was a first for the company, a full-suspension XC race bike mixing high-end alloy and carbon elements. As cross-country racing and mountain biking in general evolved, so has the Top Fuel. It gradually went from a full charging 26″ alloy/carbon mix to its later full carbon euro-centric race machine with an integrated seatmast. Then by 2012, it was seemingly retired from the Trek line, replaced by the Gary Fisher Superfly 100 to mixed reviews…

Payson McElveen on the new Trek Top Fuel in Durango

Then in 2015, the Top Fuel was reborn as a 29″ 100mm race bike again. The bike had all the trappings of a modern XC race machine, but still capable of tackling big roots and rocks. It wasn’t capable enough for the development team at Trek though, and in 2019 the Top Fuel was again reborn as a marathon/down country bike… more capable, more range, and more travel.


In its newest iteration, the 2022 Trek Top Fuel leans into the trail category even further, taking this once “race day only” ride to big drops and all-day comfort.

What’s new in the 2022 Trek Top Fuel?


Taking about what’s new with the new trail bike, first off, let’s talk about the frame itself. For a two-year “freshen-up” Trek changed quite a lot on the Top Fuel.  The most obviously notable change for 2020 model users is a new shock orientation, moving from inverted placement, back to the “original” upright position for next season. The bike also receives an extra 5mm of travel for a more balanced 120mm front & 120mm rear travel, but there’s more…


Tweaked Trail Geometry

Trek 2022 Trek Top Fuel geo

The committed move towards trail bike status brings with it a good tweak in geometry. The new head angle goes from a 67.6° to an even & slacker 66°, while the seat tube gets a bit steeper — migrating from 75° up to 76°.

2022 Trek Top Fuel full geometry

The new bike also receives extended frame Reach (around 10mm depending on frame size), at the same time moving to shorter stems all-around for similar fits.

Tech Details

2022 Trek Top Fuel 7 XT storage

Like most of the Trek road line, the new Top Fuel gets an internal storage container (gotta keep that tube and snacks mud-free). Plus, unlike the road, even the alloy models of the Top Fuel feature the internal storage compartment.

2022 Trek Top Fuel 9.8 Shock

The new framework also allows for bigger 2.5″ tires and clears a standard 20-ounce water bottle on all frame sizes excluding XS, which clears two small 15oz bottles easily.

Beefing up the overall construction of the frame, Trek designers moved up to a big 34.9mm seatpost (up from 31.6), assumingly to accommodate more robust, resilient & longer travel dropper posts. Trek says the beefier seat tube stiffens up the frame as well, but that was not their first priority.

No stress cable routing & new KnockBlock 2.0

2022 Trek Top Fuel 9.8

Those who were not super stoked on Trek’s “Control Freak” cable routing (quietly raises hand)… rejoice. The new 2022 Trek Top Fuel shifts to a fully-guided internal routing layout through the front triangle for an easy shift, brake, and dropper installation (with no rattling).

2022 Trek Top Fuel 7 knockblock

Trek also moves away from PressFit BB design for this updated Top Fuel — now going with a tried & trusted standard BSA threaded bottom bracket (unlike the move to T47 on their revamped road bikes.)

2022 Trek Top Fuel 9.9 XTR knock block

Another tweak is the KnockBlock, now in version 2.0. The new update allows for more free movement without “over-blocking”, providing for a free 72° of tail-whipping action OR the option to remove it altogether.

Smaller frame option AND 27.5″ wheels

2022 Trek Top Fuel 7

For those shorter riders that are looking to take advantage of the new design too, Trek has you covered.

The latest Top Fuel now also comes in a new XS size with proportionally scaled down 27.5″ wheels. But it’s only available in just one model for 2022, the new Top Fuel 9.7.

2022 Trek Top Fuel — suspension updates

2022 Trek Top Fuel 9.9 XTR Full

Trek went with a matching 120mm front & rear on the 2022 Top Fuel, but that’s not all in the suspension update department. The new bike’s anti-squat curve was tweaked to provide improved stability while pedaling. Trek still wants the Top Fuel to remain a fast category bike, and keeping the pedaling efficiency up and bob down is vital.

2022 Trek Top Fuel 9.9 XTR shock detail

For 2022 the Trek Mino-Link flip chip gets a slight tweak, moving back down to the lower shock mount with the swap back to an upright shock layout (the previous model had the Mino up top). Having the Mino-Link at the bottom of the shock mount keeps it easier for position swapping.

2022 Trek Top Fuel alloy shock

Flipping the Mino-Link from low to high will steepen the seat & head tube angles by half a degree and raise the bottom bracket by roughly 7mm – allowing the user to dial in the bike for a tighter feeling ride for more classic XC-oriented riding.

For the 2022 model, the Mino-Link area is more robust in either carbon or alloy frames, the same with the entire bottom bracket junction.

Even longer 130mm travel?


2022 Trek Top Fuel 5 full

For those looking to get even more rowdy on the Top Fuel, the bike will accept a 130mm fork. And while they don’t spec complete bikes with longer forks, it seems like Trek is encouraging the audience to try it out.

What will that do to the ride? Trek says it moves the seat and headtube back by another half a degree, raising the bottom bracket by 3mm. It’s not a drastic change but enough for some extra confidence and less expensive than another bike. Or combined with the Mino flip-chip, it could give you more travel up front with almost no change in handling from the baseline.

New Top Fuel carbon models & specs

2022 Trek Top Fuel 9.8 GX AXS
2022 Trek Top Fuel 9.8 GX AXS

The new 2022 Trek Top Fuel will be available in more than ten different configurations, a bold move by Trek considering the parts shortage of recent months – seven 9-series carbon bikes, plus alloy complete builds and individual framesets.

The Top Fuel will be available in full-on race builds in the 9.9 models featuring Shimano XTR or SRAM XX1 AXS components — racer’s choice.

2022 Trek Top Fuel 9.9 XTR rear

The top $11,000 SRAM build features a RockShox SID Ultimate fork, Deluxe Ultimate RCT shock & Reverb AXS dropper.

The more affordable $9500 Shimano build gets a FOX Factory 34 fork & Float DPS Factory 3-position shock & a Transfer dropper. The top of the line builds come with Bontrager’s Line PRO 30 wheels — a set we liked for its wide rim, indestructible construction, and fast roll – plus Bontrager’s new one-piece carbon RSL bar, the “trail” zero degree rise version to be exact.

For dropping, the new Top Fuel 9.9 to 9.8 (excluding that halo wireless SRAM AXS build) rock the Bontrager Line Elite “MaxFlow” dropper posts — sized for the max drop, respectively in frame size; S – 100mm; M/ML – 150mm; L – 170mm; XL – 200mm.

2022 Trek Top Fuel wheels

Trek’s carbon Top Fuel 9.8 builds are a solid mix of Shimano XT, SRAM GX AXS or GX mechanical — with SRAM builds paired to RockShox and Shimano with FOX suspension. The Top Fuel 9.8 has long been the workhouse race build and for 2022, Trek keeps a similar spec from previous years.

Top Fuel 9.8 rolls on quality, nearly top-tier race components, in-house Bontrager Line 30 Elites carbon wheels, and the same frame as the 9.9.

Each separate build has its own distinct personality, some are more performance/speed-oriented, and some more playful and fun — one thing is certain, Trek took their time making sure to balance them out with the right gear.

2022 Trek Top Fuel GX rear

The Top Fuel 9.7 is the entry into the carbon Top Fuel frameset and features much of the same careful component assortments we’ve noticed from Trek this year — lots of value packed into the mid-range builds. The 9.7 lines come with a mix of Shimano Deore/SLX, Bontrager Line 30 Comp wheels, and a conventional alloy cockpit.

New Top Fuel aluminum models & specs

2022 Trek Top Fuel 5 red
2022 Trek Top Fuel 7

Moving into alloy models, Trek offers some excellent options for getting the most bang for the buck in your bike purchase. The alloy frame line includes:

2022 Trek Top Fuel 7 XT rear

The Top Fuel 8 model with a full Shimano XT groupset, SID fork, and Bontrager Line 30 Comp wheels.

The Top Fuel 7 rolls a Deore/SLX mix, RockShox Recon 35 Gold fork, and Bontrager Line Comp 30 wheels.

Lastly, an entry-level Top Fuel 5 build comes with a Shimano Deore groupset, RockShox Recon Silver fork, and Bontrager/Alex MD35 wheels.

All alloy models arrive with Bontrager alloy cockpits and TranzX 34.9 dropper seatposts.

2022 Trek Top Fuel pricing & availability

2022 Trek Top Fuel 5

  • Trek Top Fuel alloy frameset: $2,300
  • Trek Top Fuel 5: $2,600
  • Trek Top Fuel 7: $3,500
  • Trek Top Fuel 8: $3,800
  • Trek Top Fuel carbon frameset: $3,700
  • Trek Top Fuel 9.7: $4,200
  • Trek Top Fuel 9.8 XT: $6,500
  • Trek Top Fuel 9.8 XT (Project One): $7,000
  • Trek Top Fuel 9.8 GX: $7,000
  • Trek Top Fuel 9.8 GX AXS: $7,500
  • Trek Top Fuel 9.9 XTR: $9,500
  • Trek Top Fuel 9.9 XX1 AXS: $11,000

The 2022 Trek Top Fuel is available now at Trek retailers and online from Trek Bikes. We did some checking around at our local Trek shops, and they are indeed in stock and ready to roll.


Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.