Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s Deals2021 Trek
Top Fuel 9.8 GX AXS
A 29″ carbon frame full suspension trail bike with high-end components.
Compare the full range
Manufacturer Price
$7,199| Weight | 26.2 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 115 / 120mm |
| Fork | RockShox SID Select+ |
| Shock | RockShox SIDLuxe Ultimate |
| Wheels | 29″ Carbon |
| Drivetrain | 1 × 12 Electronic |
| Groupset | Eagle AXS, GX Eagle AXS |
| Brakes | SRAM G2 RS Hydraulic Disc |
| Seatpost | Dropper |
Summary
The Trek Top Fuel is a versatile cross-country bike that has undergone significant redesigns to offer a more playful and capable ride. It features improved geometry, effective suspension, and internal storage, making it a strong contender in its category. While it excels in efficiency and handling, some reviews note its weight and component limitations as drawbacks.
Redesigned with a more playful trail-oriented stance
Effective suspension gives suppleness and support
Internal storage increases stability
Improved geometry for better all-round balance
Strong climbing performance
The robust frame means it’s heavier than its rivals
Bontrager XR3 tires generate poor traction
Knockblock isn't as well executed as other brand's versions
Feedback?
View all reviews
Jul 2022
This Trek Top Fuel review has it all: Speed, sustainability, shifting mindsets, and thoughts on the new breed of short travel trail bikes.
Efficient climber
Rewards punchy efforts and sit-and-spin periods
Active suspension with good traction
Confidence-inspiring descending chassis
Progressive rear kinematics
Excels on undulating terrain
Carries speed well on connector trails
Solid chassis feel
Higher bottom bracket and lower stack height reduce confidence in steep/rough terrain
Not as confidence-inspiring on steep descents as Transition Spur or Santa Cruz Tallboy
Less efficient pedaling platform compared to Spur
Heavier than Spur
Mar 2022 · Peter Walker
In our big 2022 downcountry group test, we pitted the Trek Top Fuel 9.9 XX1 AXS against 5 of the hottest bikes of the year. Read the full review to find out what it’s capable of and how it stacks up against the competition. Hit the link for the full review and a list with all other bikes in test.
Freedom of movement downhill
Firm and efficient rear suspension generates plenty of traction
Intuitive handling
Practical detail solutions and clean look
Very wide handlebars
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
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 |
| 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 Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 13-degree, 60 mm length; Size: L, XL, 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, MaxFlow, internal routing, 31.6 mm, 340 mm length; Size: M, M/L, Bontrager Line Elite Dropper, 150 mm travel, MaxFlow, internal routing, 31.6 mm, 440 mm length; Size: L, XL, Bontrager Line Elite Dropper, 170 mm travel, MaxFlow, internal routing, 31.6 mm, 480 mm length Type: Dropper |
| Grips | Bontrager XR Trail Elite, nylon lock-on |
| Rear Derailleur | SRAM GX Eagle AXS |
|---|---|
| Crank | SRAM GX 7K Eagle, DUB, 32T alloy ring, Boost, 175 mm length |
| Shifters | SRAM GX Eagle AXS, 12 speed |
| Cassette | SRAM Eagle XG-1275, 10-52, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Brakes | SRAM G2 RS hydraulic disc Type: SRAM G2 RS 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, SRAM CenterLine, 6-bolt, round-edge, 160 mm; Size: S, M, M/L, L, XL, SRAM CentreLine, 6-bolt, round edge, 180 mm |
First added March 28
Last updated September 2
Not listed for 1,024 days