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Today’s DealsFuel EX 9.9 X01 AXS
A 27.5″ / 29″ carbon frame full suspension trail bike with ultra high-end components.
Manufacturer Price
$9,499| Weight | 28.2 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 130 / 140mm |
| Fork | Fox Factory Float 36 |
| Shock | Fox |
| Wheels | 27.5″ / 29″ Carbon |
| Drivetrain | 1 × 12 Electronic |
| Groupset | X01 Eagle, X01 Eagle AXS |
| Brakes | SRAM G2 Ultimate Hydraulic Disc |
| Seatpost | Dropper |
Summary
The Trek Fuel is a versatile and capable trail bike, praised for its improved suspension performance, adjustable geometry, and overall ride quality. It excels in a variety of terrains, offering a balanced mix of climbing efficiency and descending prowess. The bike's RE:aktiv and Thru Shaft shock technologies enhance its bump absorption and pedaling efficiency, making it a favorite among riders for its comfort and traction.
Versatile trail bike
Improved frame stiffness and tire clearance
RE:aktiv and Thru Shaft shock tech enhances ride quality
Adjustable geometry for personalized fit
Good traction and comfort on varied terrain
Frame storage hole too small for some pumps
Stock saddle limits adjustability
Line dropper post slower than leading aftermarket options
Heavy for spec and travel
Costs more than parts sold separately
The Fuel EX is still the Fuel EX. It just got a little bit EX-er.
It’s clearly a brilliantly balanced all-rounder.
The new EX is bigger and more capable. It faces tougher competition, but its performance, features, and adaptability make it a compelling option.Bicycling
The Fuel EX has long been a benchmark trail bike.
The Trek Fuel EX 9.9 is an absolute classic in the trail bike segment.
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Dec 2022 · Ian Collins
A couple months ago, I was on the hunt for a new mid-travel personal bike and found myself largely unconvinced by most of the offerings on the market. Then a new, highly adjustable and longer in the tooth Trek Fuel EX was announced. When I reached out to Trek to inquire about testing one they offered to send a frameset for me to build out. On paper given that it had my ideal geometry, loads of adjustments (including leverage rate!), internal storage and the options of air or coil and mullet or straight 29″, this was the ultimate Swiss army

Dec 2022 · Mike Levy
The downtube storage compartment is on the new bike, and while it seems like Trek has put all the things onto the latest Fuel EX, there's one that they didn't: Knock Block.
Wide range of effective geometry adjustments
Just as much fun on smooth trails as it is on scary trails
Great climber, efficient pedaling
One-piece handlebar might be too stiff for some riders
Paint chips easily
Nov 2022 · Matt Miller
The latest Trek Fuel EX trail bike grows in travel and geometry, but still dominates the climbs.
Capable and adaptable mid-travel trail bike
A lot of adjustability
Great price points, and alloy version
Too many options for adjustability?

Sep 2022
New geometry, more travel, and even better suspension improves Trek's mid-weight trail bike.
Sep 2022 · Guy Kesteven
More travel, longer, slacker and steeper, with extra adjustability and shock options. But how does Trek’s new trail all-rounder ride?
Superbly balanced adjustable geometry
Awesome suspension performance in ‘progressive’ mode
Poppy, playful and fast-climbing for its weight
Truly premium wireless, Fox Factory, carbon-loaded spec
Lifetime warranty, threaded BB and tunneled routing
Heavy for spec and travel
Costs more than parts sold separately
Default shock set-up is too linear
Headset adjustment is laborious
XX1 is fragile for aggro trail use

Sep 2022 · Tom Marvin
Does the benchmark trail bike retain its reputation as a solid choice?
Excellent suspension
Solid feel to the frame
Great geometry
Doesn’t feel as sprightly on climbs as some
Tyres give up corner traction too easily in loose or muddy conditions

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 with active suspension
Rewards punchy efforts and sit-and-spin periods
Excels on undulating terrain
Solid chassis feel descending
Confidence-inspiring descending on less extreme terrain
Good for random trail yanks
Higher bottom bracket and lower stack height noticeable on steep descents
Requires conscious effort to stay centered on steep, rough terrain
Less confidence on steep, ugly terrain compared to Spur and Tallboy
Expensive (top model $13,974 CAD)
| Frame | Carbon frame BB Standard: BB86/BB92, Press Fit Tire Clearance: 2.6" Colors: Raw Carbon / Rage Red; Lithium Grey / Factory Orange; Matte Carbon Smoke |
|---|---|
| Fork | Fox Factory 36, Float EVOL air spring, GRIP2 damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel Travel: 140mm Spring Type: Air |
| Shock | Size: XS, S, Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x52.5mm; Size: S, M, ML, L, XL, Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x55 mm Travel: 130mm |
| 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: XS, S, Bontrager Line Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 35 mm length; Size: M, ML, L, XL, Bontrager Line Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 45 mm length |
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width |
| Saddle | Bontrager Arvada, austenite rails, 138 mm width |
| Seatpost | Size: XS, S, RockShox Reverb AXS, 100 mm travel, wireless, 31.6 mm, 340 mm length; Size: M, ML, RockShox Reverb AXS, 150mm travel, wireless, 31.6 mm, 440 mm length; Size: L, XL, RockShox Reverb AXS, 170mm travel, wireless, 31.6 mm, 480 mm length Type: Dropper |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| Rear Derailleur | SRAM X01 Eagle AXS |
|---|---|
| Crank | Size: XS, S, SRAM X01 Eagle carbon, DUB, 30T alloy ring, Boost, 170 mm length; Size: M, ML, L, XL, SRAM X01 Eagle carbon, DUB, 30T alloy ring, Boost, 175 mm length |
| Shifters | SRAM Eagle AXS, wireless, 12 speed |
| Cassette | Size: XS, S, M, ML, L, XL, SRAM XG-1295 Eagle, 10-52, 12-speed; Size: XS, S, M, ML, L, XL, SRAM XX1 Eagle, 12-speed |
| Chain | SRAM XX1 Eagle, 12 speed |
| Brakes | SRAM G2 Ultimate hydraulic disc, carbon levers Type: SRAM G2 Ultimate Hydraulic Disc |
| Rims | Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready |
|---|---|
| Tires | Size: XS, S, M, ML, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29.x2.40"; Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.60"; Size: S, M, ML, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60" |
| Disc Rotors | Size: XS, S, M, ML, L, XL, SRAM CenterLine, 6-bolt, round edge, 180 mm; Size: M, ML, L, XL, SRAM CenterLine, 6-bolt, round edge, 200 mm |
First added July 17
Last updated May 18
Not listed for 1,121 days