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2026 Trek Top Fuel 9.8 XT Di2 Gen 4
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The Top Fuel 9.8 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 120 mm/130 mm (rear/front) RockShox suspension package with a Pike Select+ fork and Deluxe Ultimate shock. Plus, you get ultra-smooth and fast shifts from a 12-speed Shimano XT Di2 wireless drivetrain.
SPECS
*Please note – spec applies to all sizes unless listed separately
*Frame |
Size: XL, L, S , M, ML
OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 120 mm travel
|
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*Fork |
Size: XL, L, S , M, ML
RockShox Pike Select+, DebonAir spring, Charger 3.1 RC2 damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 130 mm travel
|
*Shock |
Size: XL, L, S , M, ML
RockShox Deluxe Ultimate RCT, 185 mm x 50 mm
|
*Wheel front |
Size: S
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 27.5"
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Size: XL, L, M, ML
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29"
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*Wheel rear |
Size: S
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru-axle, 27.5"
|
Size: XL, L, M, ML
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru-axle, 29"
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*Skewer rear | Size: XL, L, S , M, MLBontrager Switch thru-axle, removable lever |
*Tyre |
Size: S
Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 27.5x2.40"
|
Size: XL, L, M, MLBontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40" | |
Size: XL, L, M, MLBontrager Montrose RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40" | |
*Tyre part |
Size: XL, L, S , M, ML
Bontrager TLR sealant, 180 ml/6 oz
|
Max tyre size | Frame: 29x2.50", Fork: See manufacturer |
*Shifter |
Size: XL, L, S , M, ML
Shimano XT Di2 M8250, 12-speed
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*Rear derailleur |
Size: XL, L, S , M, ML
Shimano XT M8250, long cage
|
*Crank |
Size: XL, L, S , M, ML
Shimano XT 8200, 30T, 55 mm chain-line, 170 mm length
|
*Bottom bracket |
Size: XL, L, S , M, ML
Shimano BB-MT501 BSA
|
*Cassette |
Size: XL, L, S , M, ML
Shimano XT M8200, 10-51, 12-speed
|
*Chain |
Size: XL, L, S , M, ML
Shimano Ultegra/XT M8100, 12-speed
|
Size: ML
Shimano XT M8100, 12-speed
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Max. chainring size | 1x: 34T, min 30T |
*Saddle |
Size: XL, L, S , M, ML
Verse Short Comp, steel rails, 145 mm width
|
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*Seatpost | Size: SBontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 34.9 mm, 310mm length |
Size: M, MLBontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length | |
Size: XL, L
Bontrager Line Dropper, 200 mm travel, MaxFlow, internal routing, 34.9 mm, 515 mm length
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*Handlebar |
Size: XL, L, S , M, ML
Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width
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*Grips | Size: XL, L, S , M, MLTrek Line Elite, lock-on |
*Stem |
Size: XL, L, S , M, ML
Bontrager Line Pro, 35 mm, Blendr-compatible, 0-degree, 35 mm length
|
*Brake |
Size: XL, L, S , M, ML
Shimano XT M8200 4-piston hydraulic disc
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*Brake rotor |
Size: XL, L, S , M, ML
Shimano RT86, 6-bolt, 180 mm
|
Rotor size | Max brake rotor sizes – Frame: 200 mm, min 180 mm |
Weight | M - 14.00 kg / 30.86 lbs (with TLR sealant, no tubes) |
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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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