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, and want the performance upgrade of a fully wireless electronic drivetrain.
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 SRAM GX Eagle AXS wireless electronic drivetrain 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 powerful 4-piston brakes.
The final word
The 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, more grip from the ultra-smooth suspension and more precise shifts with a SRAM AXS drivetrain.
favorite_borderWhy you'll love it
- The SRAM GX Eagle AXS drivetrain is smart, smooth and completely wireless
- 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
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.
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.
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.
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.
*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, Boost 110, 15 mm thru axle|
|Wheel rear||Bontrager Kovee Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 54, XD Driver, 6-bolt, 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"|
Bontrager TLR sealant, 180 ml/6 oz
Bontrager TLR valve, 50 mm
|Rim strip||Bontrager TLR|
|Shifter||SRAM GX Eagle AXS, 12-speed|
|Rear derailleur||SRAM GX Eagle AXS|
|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|
|Saddle||Bontrager Montrose Elite, titanium rails, 138 mm width|
Bontrager Line Elite Dropper, 100 mm travel, MaxFlow, internal routing, 31.6 mm, 340 mm length
Bontrager Line Elite Dropper, 150 mm travel, MaxFlow, internal routing, 31.6 mm, 440 mm length
|Handlebar||Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm width|
|Grips||Bontrager XR Trail Elite, nylon lock-on|
|Stem||Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 13-degree, 60 mm length|
|Head set||Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom|
|Brake||SRAM G2 RS hydraulic disc|
SRAM CenterLine, 6-bolt, round-edge, 160 mm
SRAM CenterLine, 6-bolt, round edge, 180 mm
|Weight||26.19 lbs / 11.88 kg (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.
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"
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|