2021 Trek
Top Fuel 9.8 GX
A 29″ carbon frame full suspension trail bike with high-end components.
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Manufacturer Price
$6,499| Weight | 25.9 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 115 / 120mm |
| Fork | RockShox SID Select+ |
| Shock | RockShox SIDLuxe Ultimate |
| Wheels | 29″ Carbon |
| Drivetrain | 1 × 12 |
| Groupset | GX Eagle |
| Brakes | Hydraulic Disc |
| Seatpost | Dropper |
For This Bike
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
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View Comparison
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
Infectiously agile and playful vibe
Superlative suspension feel
Seriously tight tracking frame
Trail tough kit
Internal storage
Too heavy for XC racing
Simple fork damper
Tight internal storage access
Yawning gap between this and the Supercaliber
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
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.
Brilliant trail-ripping geometry
Active and supportive suspension
Masses of cornering grip & stability
Refined and practical frame design
Downtube storage is a welcome addition
Dropper post is sluggish
Wheels are solid but quite heavy
Carbon bars are harsh
Heavier than many of its competitors
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?
| Fork | RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel Travel: 120mm Spring Type: Air |
|---|---|
| Shock | RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190 x 45 mm Travel: 115mm Spring Type: Air |
| Bottom Bracket | SRAM DUB, 92 mm, PressFit |
| Stem | Size: S, M, M/L, Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 13-degree, 60 mm length; Size: L, XL, XXL, Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 13-degree, 70 mm length |
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm width |
| Saddle | Bontrager Montrose Elite, titanium rails, 138 mm width |
| Seatpost | Size: S, Bontrager Line Elite Dropper, 100 mm travel, internal routing, 31.6 mm, 340 mm length; Size: M, M/L, Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length; Size: L, XL, XXL, Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6 mm, 480mm length Type: Dropper |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| Rear Derailleur | SRAM GX Eagle |
|---|---|
| Crank | SRAM GX 7K Eagle, DUB, 32T alloy ring, Boost, 175 mm length |
| Shifters | SRAM GX Eagle, 12-speed |
| Cassette | SRAM Eagle XG-1275, 10-52, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Brakes | SRAM G2 RS hydraulic disc Type: Hydraulic Disc |
| Rims | Bontrager Kovee Elite 30, OCLV Mountain Carbon, Tubeless-Ready |
|---|---|
| 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, SRAM CenterLine, 6-bolt, round-edge, 160 mm; Size: S, M, M/L, L, XL, XXL, SRAM CentreLine, 6-bolt, round edge, 180 mm |
Last updated July 26
Not listed for 268 days