Trek Top Fuel 9.9 XO AXS Gen 4 2025
Trek Top Fuel 9.9 XO AXS Gen 4 2025
Trek Top Fuel 9.9 XO AXS Gen 4 2025

Trek Top Fuel 9.9 XO AXS Gen 4 2025

5319388

Regular price£8,500.00
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The Top Fuel 9.9 X0 AXS Gen 4 is an ultra-light and capable carbon trail bike that's built for soaring up climbs and rallying over miles of singletrack. This top-level build delivers the performance you want, with a RockShox Ultimate suspension package (120 mm/130 mm) and SRAM's wireless X0 AXS transmission that shifts smooth and easy, especially under load. It's topped off with carbon wheels to keep your ride light from top to bottom.

 

It's right for you if...

You want the best carbon trail bike with all-mountain capability, climbing efficiency and components to match. You don't mind spending a little extra to get the ultra-clean shifting of SRAM's X0 AXS wireless transmission and an upgraded RockShox Ultimate suspension package is a must.

 

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 130 mm RockShox Pike Ultimate fork with DebonAir spring and Charger 3.1 RC2 damper, plus 120 mm of rear travel from a RockShox Deluxe Ultimate RCT shock. A wireless SRAM X0 AXS transmission, SRAM Level Silver Stealth 4-piston hydraulic brakes, RockShox Reverb AXS dropper post and tubeless-ready Bontrager Line Pro 30 carbon wheels.

 

The final word

When you're after the best all-mountain carbon ride, reach for Top Fuel X0 AXS 9.9 Gen 4. With an ultra-light frame, carbon wheels and SRAM X0 wireless transmission, it delivers everything you want on dirt. Plus, it's built with a 4-way Mino Link lower suspension mount for taking control of your geometry and suspension feel.

 

Specifications

Frame OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, OCLV Next rocker link, Mino 4 link, ABP, Boost148, 120 mm travel
Shock RockShox Deluxe Ultimate RCT, 185 mm x 50 mm
Max compatible fork travel 140 mm
Wheels
*Wheel front Size: S
Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 27.5"
Size: M, ML, L, XL
Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29"
Wheel rear Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle
*Tyre Size: S
Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 27.5x2.40"
Size: M, ML, L, XL
Bontrager Montrose RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40"
Size: M, ML, L, XL
Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40"
Tyre part Bontrager TLR sealant, 180 ml/6 oz
Rim strip Bontrager TLR
Max tyre size Frame: 29x2.50", Fork: See manufacturer
E-system
Battery SRAM eTap battery pack (with charger)
Drivetrain
*Shifter Size: S , M, ML, L, XL
SRAM AXS POD
Size: S , M, ML, L, XL
SRAM AXS POD, paired with dropper
Rear derailleur SRAM X0 Eagle AXS, T-Type
Crank SRAM X0 Eagle, DUB, 30T steel, T-Type, 55mm chainline, 170 mm length
Bottom bracket SRAM DUB MTB Wide, 73 m, BSA threaded
Cassette SRAM Eagle XS-1295, T-Type, 10-52, 12-speed
Chain SRAM X0 Eagle, T-Type, 12-speed
Max. chainring size 1x: 34T, min 30T
Components
Saddle Verse Short Pro, carbon rails, 145 mm width
*Seatpost Size: S
RockShox Reverb AXS, 100 mm travel, wireless, 34.9 mm, 340 mm length
Size: M, ML, L, XL
RockShox Reverb AXS, 170 mm travel, wireless, 34.9 mm, 480 mm length
*Handlebar/stem (integrated) Size: S
Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 35 mm stem length
Size: M, ML, L, XL
Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 45mm stem length
*Brake Size: S , M, ML, L, XL
SRAM Level Silver 4-piston hydraulic disc
Size: S , M, ML, L, XL
SRAM Level Silver Stealth 4-piston hydraulic disc
Brake rotor SRAM HS2, 6-bolt, 180mm
Rotor size Max brake rotor sizes – Frame: 200 mm, min 180 mm, Fork: see fork manufacturer
Weight
Weight M - 13.20 kg / 29.11 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).

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.


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