It's right for you if...
You want fun. All of it. But you’re also serious about speed, and want a bike that's spec'd accordingly. You're looking for a quick down-country shredder that's fast on flats, soaks up rough terrain, and has the latest in fully wireless electronic components.
The tech you get
A full carbon frame, super-plush 120mm RockShox SID Ultimate fork with a Charger Race Day damper that gives you more adjustment. 120mm of rear travel with a SID Luxe shock, and a fully wireless SRAM XX1 Eagle AXS drivetrain. Plus, wide carbon Bontrager Line Pro 30 wheels with a 108-tooth Rapid Drive hub for instant engagement, wireless RockShox Reverb AXS dropper, and SRAM Level Ultimate brakes with carbon levers.
The final word
The best of the best. You get all the fast down-country fun you can handle, with all of the latest and greatest in suspension and wireless drivetrain tech.
favorite_borderWhy you'll love it
- The SRAM XX1 Eagle AXS drivetrain is smart, smooth, and completely wireless
- The OCLV Carbon RSL integrated bar/stem is ultralight, ultra-comfortable, and it looks awesome
- A sleek internal storage compartment gives you a versatile spot to stow tools and gear
- Wider Line Pro 30 wheels provide better tire support so you can run lower pressure and get more traction
- Make it yours: it's fully customizable through Project One
"This is a really, really good bike"
"The Top Fuel is a very capable descender, but its well-proportioned geometry is just half the story. It manages to strike a great balance between grip, tracking, and precision. The whole bike seems to just will you on to hit things faster and with more precision."Read more
"This thing rips"
"The new Top Fuel is also much more composed on rough and fast descents. Thanks to the longer reach and slacker head angle, the overall wheelbase length has grown by almost 40mm. That’s huge, and it offers a vastly more planted feel at speed. Along with the big tyres and active suspension, this really is a solid little trail bike."Read more
Quick and in control
120mm of rear travel combined with progressive trail geometry gives you a fast, responsive ride that helps you keep your cool when the trail turns rowdy.
Will my bike have a curved top tube?
Smaller frames (XS and S) have a curved top tube. This design makes for a lower standover height, which allows shorter riders to straddle the bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don't have the same issues with standover height.
Carbon Care Wheel Loyalty Programme
Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Programme. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.
Oversized 34.9mm dropper post
Bigger is better. The oversized seat tube diameter gives more support and strength for longer travel droppers, and allows for more robust, durable internals that work faster.
Threaded bottom bracket
More robust than pressfit, threaded BBs hold up in nasty conditions and make servicing easier.
International Standard Chain Guide mounts offer easy chain guide installation and adjustment.
*spec applies to all sizes unless otherwise noted
|Frame||OCLV Mountain Carbon, internal storage, tapered head tube, Knock Block 2.0, internal guided routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 120 mm travel|
|Fork||RockShox SID Ultimate, DebonAir spring, Charger Race Day damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel|
|Shock||RockShox Deluxe Ulitmate RCT, 185mm x 50mm|
|Max compatible fork travel||130mm (541mm axle-to-crown)|
|Wheel front||Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready, 6-bolt, Boost110, 15 mm thru axle|
|Wheel rear||NEW Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12mm thru axle|
|Skewer rear||Bontrager Switch thru-axle, removable lever|
|Rim||Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle|
|Tire||Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29.x2.40"|
|Tire part||Bontrager TLR sealant, 180 ml/6 oz|
|Rim strip||Bontrager TLR|
|Max tire size||Frame: 29x2.5" Fork: see manufacturer|
|Shifter||SRAM Eagle AXS, wireless, 12-speed|
|Rear derailleur||SRAM XX1 Eagle AXS|
S, M, M/L, L
SRAM XX1 Eagle, DUB, 30T alloy ring, 55 mm chainline, 170 mm length
SRAM XX1 Eagle, DUB, 30T alloy ring, 55 mm chainline, 175 mm length
|Bottom bracket||SRAM DUB MTB Wide, 73 m, BSA threaded|
|Cassette||SRAM Eagle XG-1299, 10-52, 12 speed|
|Chain||SRAM XX1 Eagle, 12 speed|
|Max chainring size||Max: 36T (oval - 34T) Min: 28T|
|Saddle||Bontrager Arvada, austenite rails, 138 mm width|
RockShox Reverb AXS, 100mm travel, wireless, 34.9mm, 340mm length
RockShox Reverb AXS, 150mm travel, wireless, 34.9mm, 440mm length
RockShox Reverb AXS, 170mm travel, wireless, 34.9mm, 480mm length
|*Integrated Bar Stem||
Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5mm handlebar rise, 820mm width, 0 degree stem rise, 35mm stem length
M, M/L, L, XL
Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5mm handlebar rise, 820mm width, 0 degree stem rise, 45mm stem length
|Headset||Knock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8" top, 1.5" bottom|
|Brake||SRAM G2 Ultimate hydraulic disc, carbon levers|
S, M, M/L, L, XL
SRAM CenterLine, 6-bolt, round-edge, 160mm
S, M, M/L, L, XL
SRAM CenterLine, 6-bolt, round edge, 180 mm
|Battery||SRAM eTap battery pack (with charger)|
|Weight||M - 11.85 kg / 26.13 lbs (with TLR sealant, no tubes)|
|Weight limit||This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).|
Sizing & Tech
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
137.0 - 155.0 cm
4'5.9" - 5'1.0"
64.0 - 73.0 cm
25.2" - 28.7"
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
165.5 - 179.0 cm
5'5.2" - 5'10.5"
77.0 - 84.0 cm
30.3" - 33.1"
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise stated.
|Frame size number||Frame size letter||Geometry position||Wheel size||A — Seat tube||B — Seat tube angle||Effective seat tube angle||C — Head tube length||D — Head angle||E — Effective top tube||F — Bottom bracket height||G — Bottom bracket drop||H — Chainstay length||I — Offset||J — Trail||K — Wheelbase||L — Standover||M — Frame reach||N — Frame stack|