Skip to main content

Trek Top Fuel 9.8 GX AXS Gen 4

Trek Top Fuel 9.8 GX AXS Gen 4
  • Color: Lunar Silver
  • Color: Matte Dark Web
$6,999.99
Color:
Size: Select size
Wheel Size: Select wheel size
Please select options Unavailable

Details

Top Fuel 9.8 GX AXS Gen 4 is a lightweight carbon trail bike built to rip up climbs and stay playful on descents. It gives you the confidence you want through roots and rocks, thanks to a 120mm/130mm RockShox suspension package with a Pike Select+ fork and Deluxe Ultimate shock. Plus, you can shift easy even under load with a SRAM GX Eagle AXS wireless transmission.

IT'S RIGHT FOR YOU IF…
You're after a carbon trail bike that keeps weight to a minimum without compromising on capability. You like to ride everything – long alpine climbs, rooty aspen slalom, fast XC singletrack, and you want a bike that can keep up on the ups and hold its own on the downs. Keeping things light with a carbon frame is important to you, and you want the smooth-shifting performance of a direct mount transmission.

THE TECH YOU GET
An OCLV Mountain Carbon frame with a 4-way Mino Link lower shock mount for tweaking geometry and suspension leverage rate. A 130mm RockShox Pike Select+ fork with DebonAir spring, and Charger 3.1 RC2 damper, plus 120mm of rear travel from a RockShox Deluxe Ultimate RCT shock. A SRAM GX Eagle wireless transmission, SRAM Level Bronze 4-piston hydraulic brakes, Bontrager Line dropper post, and tubeless-ready Bontrager Line Comp 30 wheels.

THE FINAL WORD
If you're after a light carbon trail bike that balances a playful and capable ride, reach for Top Fuel 9.8 GX AXS Gen 4. Its ultra-lightweight frame pairs with a 4-way Mino Link lower suspension mount for taking control of your geometry and suspension feel. Plus, you get a wireless SRAM GX AXS transmission and sweet RockShox suspension package.

WHY YOU'LL LOVE IT
- Top Fuel Gen 4 delivers with an intensely lightweight build, improved in-frame storage, and more adjustability for all kinds of rides and riders
- With 120mm rear and 130mm front RockShox suspension, it delivers a well balanced ride that stays efficient on the ups and playful on descents
- The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
- In-frame storage with an improved BITS bag system makes it easy to stash tools, tubes, and snacks
- It's more upgrade-ready than ever, with room for bigger 140mm forks and longer-stroke shocks for up to 130mm of rear travel, plus room for extra-long dropper posts

Sizes:
Frame SizeSmallMediumMedium / LargeLargeX-Large
Geometry positionHigh / Low High / LowHigh / LowHigh / LowHigh / Low
Wheel size29" 29"29"29"29"
Seat tube (cm)36 414243.547
Seat tube angle69.5° / 69° 70.5° / 70°70.5° / 70°70.5° / 70°70.5° / 70°
Effective seat tube angle76.5° / 76° 77.3° / 76.9°76.6° / 76.276.3° / 75.9°75.6° / 75.2°
Head tube length (cm)10.5 10.51111.513.5
Head angle65.9° / 65.5° 65.9° / 65.5°65.9° / 65.565.9° / 65.5°65.9° / 65.5°
Effective top tube (cm)55.8 / 55.9 58.7 / 58.861.1 / 61.263 / 63.167.2 / 67.3
Bottom bracket drop (cm)1 / 1.6 2.6 / 3.22.6 / 3.22.6 / 3.22.6 / 3.2
Chainstay length (cm)43.4 / 43.5 43.4 / 43.543.9 / 4443.9 / 4444.4 / 44.5
Offset (cm)4.3 4.34.34.34.3
Trail (cm)11.1 / 11.5 12.1 / 12.512.1 / 12.512.1 / 12.512.1 / 12.5
Wheelbase (cm)115 / 115.1 118.8 / 118.8121 / 121122.7 / 122.7127 / 127.1
Standover (cm)70.5 / 70 75.5 / 7575.7 / 75.275.8 / 75.376.3 / 75.8
Frame reach (cm)42.2 / 41.7 45.2 / 44.746.7 / 46.248.2 / 47.751.2 / 50.7
Frame stack (cm)56.6 / 57 59.9 / 60.360.4 / 60.760.8 / 61.262.6 / 63
Sizes:
Frame SizeRider Height (cm)Rider HEight (cm)Rider Height (in)
Small155 - 165 5'1" - 5'5"
Medium165 - 176 5'5" - 5'9"
Medium / Large173 - 180 5'8" - 5'11"
Large177 - 188 5'10" - 6'2"
X-Large188 - 195 6'2" - 6'5"

Specs

Pedals Sold Separately
Chain SRAM GX Eagle, T-Type, 12 speed
Frame OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, OCLV Next rocker link, Mino 4 link, ABP, Boost148, 120mm travel
Tires Bontrager Montrose RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 29x2.40'' // Bontrager Gunnison RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 29x2.40''
Brakes SRAM Level Bronze 4-piston hydraulic disc // SRAM Level Bronze 4-piston hydraulic disc
Rotors SRAM CenterLine, 6-bolt, round edge, 180mm
Saddle Verse Short Comp, steel rails, 145mm width
Wheels Bontrager Line Comp 30, High Strength 6000 Series Aluminum rim, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD freehub, Boost148, 12mm thru axle, 29''
Crankset SRAM GX Eagle, T-Type, DUB, 30T, 55mm chainline, 170mm length
Seatpost Bontrager Line Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 450mm length
Shifters SRAM AXS POD
Rear Shock RockShox Deluxe Ultimate RCT, 185mm x 50mm
Tape/Grips Bontrager XR Trail Elite, nylon lock-on
Bottom Bracket SRAM DUB MTB Wide, 73mm, BSA threaded
Rear Derailleur SRAM GX Eagle AXS, T-Type
Cassette/Freewheel SRAM Eagle XS-1275, T-Type, 10-52, 12 speed
Handlebars Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5mm handlebar rise, 820mm width, 0 degree stem rise, 45mm stem length
Fork RockShox Pike Select+, DebonAir spring, Charger 3.1 RC2 damper, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 130mm travel

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Lunar Silver / Large / 29-inch 197216022572 5319441 TOP304470584
Matte Dark Web / Medium/Large / 29-inch 197216022510 5319435
Lunar Silver / Medium / 29-inch 197216022558 5319439 TOP301762604
Matte Dark Web / Large / 29-inch 197216022527 5319436
Matte Dark Web / Small / 27.5-inch 197216022497 5319433
Lunar Silver / Medium/Large / 29-inch 197216022565 5319440 TOP317121334
Lunar Silver / X-Large / 29-inch 197216022589 5319442 TOP312081874
Lunar Silver / Small / 27.5-inch 197216022541 5319438 TOP334294464
Matte Dark Web / Medium / 29-inch 197216022503 5319434
Matte Dark Web / X-Large / 29-inch 197216022534 5319437