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It's right for you if...
You want an efficient, capable, short-travel trail bike that excels at endurance and stage racing and can handle rough trails and even XC races. You appreciate the performance advantage of carbon and want a super-light bike with race-level components and suspension.
The tech you get
A full OCLV Mountain Carbon frame, upgraded 120 mm Fox Performance 34 Step-Cast Float fork with GRIP damper, 115 mm of rear travel with a Fox Performance Float shock and a 1x12 SRAM GX Eagle drivetrain with Truvativ Descendant 7k DUB cranks. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 54-tooth Rapid Drive hub for fast engagement, TwistLoc dual remote suspension lockout, Bontrager Line Elite Dropper, Bontrager Kovee Pro OCLV Carbon handlebars and upgraded Shimano SLX hydraulic disc brakes.
The final word
Top Fuel 9.8 is an efficient, capable and ridiculously fun short-travel carbon trail bike with the performance boost of upgraded parts like the drivetrain, fork and brakes. It's built to rip technical terrain and descents, speed through flow sections and withstand the beating that endurance races dole out.
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 down tube for extra stiffness in the rough and Knock Block frame defence to protect against spinning bars and fork crowns
- TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
- Wider Kovee Elite 30 wheels provide better tyre support so you can run lower pressure and get more traction
- This short-travel trail bike gives you a suspension set-up that’s capable in several MTB disciplines, and especially suited to endurance events
Features
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
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.
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.
Learn more
TwistLoc Dual Remote Lockout
TwistLoc simultaneously locks out front and rear shocks with a simple Grip Shift-like motion; and it leaves room for a dropper post lever.
Blendr stem
Bontrager stem technology lets you clip your gear directly to the stem for clean looks and maximum user friendliness.
Learn more
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.
Specifications
*spec applies to all sizes unless otherwise noted
| Mainframe | 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 | Fox Performance 34 Step-Cast, Float EVOL air spring, GRIP 2-position damper, TwistLoc remote, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 120 mm travel |
| Shock | Fox Performance Float, 2-position DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45 mm |
| Front Wheel | Bontrager Kovee Elite 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Rear Wheel | Bontrager Kovee Elite 30 carbon, Tubeless Ready, 54T Rapid Drive, 6-bolt, SRAM XD driver, Boost148, 12 mm thru axle |
| Rear Skewer | Bontrager Switch thru axle, removable lever |
| Tire | Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40" |
| Shifter | SRAM GX Eagle, 12-speed |
|---|---|
| Rear Derailleur | SRAM GX Eagle |
| *Crank |
Size:
S Truvativ Descendant 7k Eagle DUB, 32T alloy ring, Boost, 170 mm length |
|
Size:
M, M/L, L, XL, XXL Truvativ Descendant 7k Eagle DUB, 32T alloy ring, Boost, 175 mm length |
|
| Bottom Bracket | SRAM DUB, 92 mm, PressFit |
| Cassette | SRAM XG-1275 Eagle, 10-50, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| 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 |
Size:
S, M, M/L, L, XL, XXL Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm width |
|
Size:
S, M, M/L, L, XL Bontrager Kovee Pro carbon, 35 mm clamp, 5 mm rise, 720 mm width |
|
| *Stem |
Size:
S, M, M/L Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 60 mm length |
|
Size:
M, L, XL, XXL Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 70 mm length |
|
|
Size:
M/L, L, XL Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 80 mm length |
|
| Headset | Knock Block Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom |
| *Brake |
Size:
S, M, M/L, L, XL, XXL Shimano SLX M7100 hydraulic disc |
|
Size:
S, M, M/L, L, XL Shimano SLX M7000 hydraulic disc, 180 mm front rotor, 160 mm rear rotor |
|
| *Brake Rotor |
Size:
S, M, M/L, L, XL, XXL Shimano RT66, 6-bolt, 180 mm |
|
Size:
S, M, M/L, L, XL, XXL Shimano RT66, 6-bolt, 160 mm |
Weight
- Weight
- M - 11.80 kg / 26.02 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 Trek 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 - 162.0 cm
5'0.2" - 5'3.8"
72.0 - 76.0 cm
28.3" - 29.9"
M
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
M/L
170.0 - 179.0 cm
5'6.9" - 5'10.5"
80.0 - 84.0 cm
31.5" - 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"
All measurements provided in cm unless otherwise stated.
| Frame size number | Frame size letter | Geometry position | 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 | 39.4 | 68.5° | 75.5° | 9.0 | 68.0° | 56.3 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 111.7 | 73.0 | 41.0 | 59.0 |
| 15.5 | S | Low | 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 | High | 41.9 | 68.5° | 75.5° | 9.0 | 68.0° | 59.8 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 115.2 | 73.5 | 44.5 | 59.0 |
| 17.5 | M | Low | 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 |
| 18.5 | ML | High | 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 | 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 | 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 | 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 | 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 | 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 |
| 23.5 | XXL | High | 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 |
| 23.5 | XXL | Low | 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 |