Trek Fuel EX 9.8 XT Gen 6 (2025)

It's right for you if...

You're chasing long flowy and technical descents, and want to pedal back to the top for more, lap after lap. You want the vibration-damping benefits of a carbon frame and carbon wheels, plus upgraded suspension that smooths out the rough and rowdy.

The tech you get

A light and stiff carbon frame with a full FOX Performance suspension package that smooths out rowdy rock gardens and root lattices. Plus, carbon wheels that keep your set-up light and tracking precise, and the clean shifting and brake modulation of a Shimano XT drivetrain. Finally, you'll find adjustable geometry and in-frame storage for keeping your set-up dialled just for you.

The final word

The Fuel EX 9.8 is the culmination of years of trail riding and progression, with longer front end geometry for tackling steeper and hairier descents, and a steeper seat tube to keep you perched on climbs. It's equipped with the cherry-picked components you want, like upgraded suspension, carbon wheels and a Shimano XT drivetrain.

Why you'll love it

• The Fuel EX Gen 6 gives you 140/150 mm of travel with extra adjustability features and more stable handling, plus a more robust frame with internal storage
• We expanded our size range to ensure a better fit for all riders, and use the best-fitting wheels for each frame size: XS frames get 27.5″ wheels, S frames get to choose between 27.5″ or 29″, and sizes M and up get 29″ wheels
• It's ready to rip with lightweight carbon wheels that easily tackle rough-terrain and hold their line when things get rowdy
• In-frame storage makes it easy to bring along all your essentials, while keeping your set-up streamlined and sleek
• With the adjustable angle headset (angled cups sold separately) and Mino Link, you can choose from six different geometry configurations 

FRAMESET

• Frame: OCLV Mountain Carbon, internal storage, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, guided internal routing, magnesium rocker link, 34.9 mm seat tube, ISCG 05, 55 mm chain line, BSA 73, downtube guard, shuttle guard, ABP, UDH, Boost148, 140 mm travel
• Fork: Fox Performance 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 150 mm travel
• Shock: Fox Performance Float X, 2-position damper, 185 mm x 55 mm
• Max compatible fork travel: 160 mm, XS/S: 150 mm

WHEELS

• Wheel front
  • Size: XS , S: Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5"
  • Size: S , M , ML , L , XL: Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
• Wheel rear
  • Size: XS , S: Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle, 27.5"
  • Size: S , M , ML , L , XL: Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle, 29"
• Hub front: Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
• Skewer rear: Bontrager Switch thru-axle, removable lever
• Rim: Bontrager Line Elite 30, Tubeless-Ready
• Tyre
  • Size: XS , S: Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 60 tpi, 27.5 x 2.50"
  • Size: S , M , ML , L , XL: Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 60 tpi, 29x2.50"
• Tyre part: Bontrager TLR sealant, 180 ml/6 oz
• Rim strip: Bontrager TLR
• Max tyre size: Frame: 29x2.50" (XS & S: 27.5x2.50"), Fork: See manufacturer

DRIVETRAIN

• Shifter: Shimano XT M8100, 12-speed
• Rear derailleur: Shimano XT M8100, long cage
• Crank: Shimano XT M8120, 30T, 55 mm chain line, 170 mm length
• Bottom bracket: Shimano BB-MT501 BSA
• Cassette: Shimano XT M8100, 10-51, 12-speed
• Chain: Shimano Ultegra/XT M8100, 12-speed
• Max. chainring size: 1x: 34T round, 32T oval, min 28T
• 
  COMPONENTS
  
  Saddle: 
  • Size: XS , S , M , ML , L , XL: Bontrager Arvada, austenite rails, 138 mm width
  • Size: XS , S , M , ML , L , XL: Verse Short Comp, steel rails, 145 mm width
• Seatpost:
  • Size: XS , S: Bontrager Line Elite Dropper, 100 mm travel, MaxFlow, internal routing, 34.9 mm, 345 mm length
  • Size: M , ML: Bontrager Line Elite Dropper, 150 mm travel, MaxFlow, internal routing, 34.9 mm, 440 mm length
  • Size: L: Bontrager Line Elite Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 485 mm length
  • Size: XL: Bontrager Line Elite Dropper, 200 mm travel, MaxFlow, internal routing, 34.9 mm, 550 mm length
• Handlebar: Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width
• Handlebar/stem (integrated)
  • Size: XS , 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
• Grips: Bontrager XR Trail Elite, nylon lock-on
• Stem: Bontrager Line Pro, 35 mm, Blendr-compatible, 0-degree, 35 mm length
• Head set: Integrated cartridge bearing, 1-1/8" top, 1.5" bottom, angle adjust cup compatible
• Brake: Shimano XT M8120 4-piston hydraulic disc
• Brake rotor:
  • Size: XS , S , M , ML , L , XL: Shimano RT86, 6-bolt, 180 mm
  • Size: M , ML , L , XL: Shimano RT86, 6-bolt, 203 mm
• Rotor size : Max brake rotor sizes - Frame: 203mm, Fork: see fork manufacturer

ACCESSORIES

• Bag: Bontrager BITS Internal Frame Storage Bag

WEIGHT

• Weight: M - 14.48 kg / 31.93 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).

The manufacturer reserves 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. The prices shown are the manufacturer's suggested retail prices.