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Today’s DealsTop Fuel 8
A 29″ aluminum frame full suspension crosscountry bike with high-end components.
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Manufacturer Price
$3,299| Weight | 30.1 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 115 / 120mm |
| Fork | RockShox Recon Gold RL |
| Shock | Fox Float DPS Performance |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | NX Eagle |
| Brakes | Shimano Deore Hydraulic Disc |
| Seatpost | Dropper |
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.
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
Suspension may feel too harsh for some
Head angle considered too steep by some
High cost for higher-end models
This sub-25-pound 'boat anchor' is fast as hell.
For rapid mile-munching that doesn’t get in the way of enjoyment on the descents, the Top Fuel is hard to beat.
With the Trek Top Fuel 9.8, I feel much more stable on the downhill and enjoy it much more than my previous bikes.
This bike is exactly what the new generation of aggressive cross-country racers needs.
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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..
Great suspension performance
Frame storage
Strong climbing performance
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

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.
Sublime suspension, playful handling, fantastic size range, internal storage
Not particularly light for the intended use, inconsistent Shimano brakes on our test bike

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?
Accelerates willingly
Easy, intuitive handling
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

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?


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.
| 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 Standard: BB86/BB92, Press Fit Tire Clearance: 2.4" Colors: Purple 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 Travel: 120mm Spring Type: Air |
| Shock | Fox Performance Float, 2-position DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45mm Travel: 115mm |
| 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 Type: Dropper |
| 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 Type: Shimano Deore Hydraulic Disc |
| 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 |
First added October 10
Last updated July 25
Not listed for 1,769 days