More options
It's right for you if...
You’re looking for a do-it-all full suspension mountain bike that's efficient and fast, but doesn't shy away from some bigger stuff. You want the added stiffness and weight savings of a carbon frame, but don't mind saving some money on the parts.
The tech you get
A light and stiff full carbon frame, 120 mm RockShox SID Select+ fork, 115 mm of rear travel with a RockShox SID Luxe Ultimate shock and a new SRAM GX Eagle drive train with an extra-low 52-tooth climbing gear. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 54-tooth Rapid Drive hub for fast engagement, Bontrager Line Elite Dropper and carbon handlebars.
The final word
Top Fuel 9.8 is a ridiculously fun carbon down-country bike with upgraded parts that give you noticeable benefits on the trail, like more speed from the carbon wheels and more grip from the ultra-smooth suspension.
The Walkthrough
favorite_borderWhy you'll love it
- This bike wants to go fast – it's built with no-nonsense, high-performance parts
- You get a Straight Shot downtube for extra-stiff, responsive handling without added weight and a Knock Block headset that protects against spinning bars and fork crowns
- Bontrager DropLock's shifter-style lever lets you easily lock out both front and rear shocks at the same time for added sprinting or climbing efficiently. Plus, it controls your dropper post too
- Wider Kovee Elite 30 wheels provide better tyre support so you can run lower pressure and get more traction
- This short-travel bike has a killer suspension set-up reminiscent of the all-mighty mullet – it's both efficient and ready to party
Features
Will my bike have a curved top tube?
Smaller frames (S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. The larger frames (M and ML) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.
Straight Shot downtube
Straight Shot downtube gives you an extra-stiff frame without adding any weight, so you can stick your line through the rough stuff and still fly up the next climb.
Rapid Drive 108 rear hub
With 108 points of engagement, Rapid Drive gives you nearly instant acceleration instead of a clunky lag when you step on the pedals. You get smooth, immediate power to blast out of corners and hammer through the rough stuff. And that extra pedal ratchet adds control that can make all the difference when tackling a tricky climb.
Suspension Calculator
This suspension calculator will help you optimise your suspension settings for your riding weight. Simply follow the steps to find your best set up.
Learn more
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.
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Complete Tubeless System
Tubeless Ready rims and tyres make it easy to ditch the tubes so you get better traction, fewer flats and less weight. You're ready to roll straight out of the box with the included TLR rim strips, valves and sealant.
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Mino Link adjustable geometry
Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.
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Bontrager DropLock Lever
One easy-to-use lever locks out your suspension and controls your dropper post with no unnecessary handlebar clutter.
Control Freak cable management
The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout and dropper post lines to be routed through the frame for clean looks and the ultimate custom set-up.
Blendr-compatible stem
Bontrager Blendr stem technology lets you clip your gear directly to the stem for clean looks and maximum user friendliness.
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Specifications
*spec applies to all sizes unless otherwise noted
| Frame | OCLV Mountain Carbon main frame and stays, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, magnesium rocker link, Mino Link, ABP, Boost148, 115 mm travel |
|---|---|
| Fork | RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel |
| Shock | RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190x45 mm |
| Suspension lever | Bontrager Drop Lock remote |
| Wheel front | Bontrager Kovee Elite 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Wheel rear | Bontrager Kovee Elite 30 carbon, Tubeless Ready, 54T Rapid Drive, 6-bolt, SRAM XD driver, Boost148, 12 mm thru axle |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Tyre | Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40" |
| *Tyre part |
Size:
S, M, M/L, L, XL, XXL Bontrager TLR sealant, 180 ml/6 oz |
|
Size:
S, M, M/L, L, XL, XXL Bontrager TLR valve, 50 mm |
|
|
Size:
S, M, M/L, L, XL, XXL Bontrager TLR sealant |
|
| Rim strip | Bontrager TLR |
| Shifter | SRAM GX Eagle, 12-speed |
|---|---|
| Rear derailleur | SRAM GX Eagle |
| Crank | SRAM GX 7K Eagle, DUB, 32T alloy ring, Boost, 175 mm length |
| Bottom bracket | SRAM DUB, 92 mm, PressFit |
| Cassette | SRAM Eagle XG-1275, 10-52, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Max. chainring size | 34T |
| 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 |
|
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm width |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| *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 |
|
| Brake | SRAM G2 RS hydraulic disc |
| *Brake rotor |
Size:
S, M, M/L, L, XL, XXL SRAM CenterLine, 6-bolt, round-edge, 160 mm |
|
Size:
S, M, M/L, L, XL SRAM CenterLine, 6-bolt, round edge, 180 mm |
| Weight | M - 11.74 kg / 25.88 lbs (with TLR sealant, no tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
Sizing & fit
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
Rider Height
Inseam
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
M/L
165.5 - 179.0 cm
5'5.2" - 5'10.5"
77.0 - 84.0 cm
30.3" - 33.1"
L
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
2XL
195.0 - 203.0 cm
6'4.8" - 6'7.9"
92.0 - 95.0 cm
36.2" - 37.4"
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.5 | S | High | 29" | 39.4 | 68.5° | 75.5° | 9.0 | 68.0° | 56.3 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 111.7 | 73.1 | 41.0 | 59.0 |
| 15.5 | S | Low | 29" | 39.4 | 68.0° | 75.0° | 9.0 | 67.5° | 56.4 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 111.7 | 72.5 | 40.5 | 59.4 |
| 17.5 | M | Low | 29" | 41.9 | 68.0° | 75.0° | 9.0 | 67.5° | 59.9 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 115.2 | 73.0 | 44.0 | 59.4 |
| 17.5 | M | High | 29" | 41.9 | 68.5° | 75.5° | 9.0 | 68.0° | 59.8 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 115.2 | 73.6 | 44.5 | 59.0 |
| 18.5 | ML | High | 29" | 44.5 | 68.5° | 75.5° | 9.0 | 68.0° | 61.4 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 116.8 | 74.1 | 46.1 | 59.0 |
| 18.5 | ML | Low | 29" | 44.5 | 68.0° | 75.0° | 9.0 | 67.5° | 61.5 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 116.8 | 73.5 | 45.6 | 59.4 |
| 19.5 | L | High | 29" | 47.0 | 68.5° | 75.5° | 10.0 | 68.0° | 63.0 | 34.3 | 2.9 | 43.4 | 4.4 | 10.3 | 118.5 | 75.1 | 47.5 | 59.9 |
| 19.5 | L | Low | 29" | 47.0 | 68.0° | 75.0° | 10.0 | 67.5° | 63.2 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 118.6 | 74.5 | 47.0 | 60.3 |
| 21.5 | XL | High | 29" | 52.1 | 68.5° | 75.5° | 11.0 | 68.0° | 65.0 | 34.3 | 2.9 | 43.4 | 4.4 | 10.3 | 120.6 | 77.1 | 49.2 | 60.8 |
| 21.5 | XL | Low | 29" | 52.1 | 68.0° | 75.0° | 11.0 | 67.5° | 65.1 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 120.7 | 76.5 | 48.7 | 61.2 |
| 23 | XXL | High | 29" | 57.0 | 68.5° | 75.5° | 12.0 | 68.0° | 67.5 | 34.3 | 2.9 | 43.4 | 4.4 | 10.3 | 123.3 | 78.6 | 51.5 | 61.7 |
| 23 | XXL | Low | 29" | 57.0 | 68.0° | 75.0° | 12.0 | 67.5° | 67.7 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 123.4 | 78.0 | 51.0 | 62.2 |