Trek Top Fuel 9.8 XT Gen 4 Bike 2025 Overview
Build
| Frame | OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 120mm travel BB Standard: BSA, 73mm, Threaded Tire Clearance: 2.5″ Colors: Matte Dark Web; Lunar Silver; Axinite Flip |
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| Fork | RockShox Pike Select+, DebonAir spring, Charger 3.1 RC2 damper, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 130mm travel Travel: 130mm Spring Type: Air |
| Shock | RockShox Deluxe Ultimate RCT, 185mm x 50mm Travel: 120mm |
| Bottom Bracket | Shimano BB-MT501 BSA |
| Saddle | Verse Short Comp, steel rails, 145mm width |
| Seatpost | Size: S, Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 34.9mm, 310mm length; Size: M, ML, L, XL, Bontrager Line Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 450mm length Type: Dropper |
| Grips | Bontrager XR Trail Elite, nylon lock-on |
Groupset
| Rear Derailleur | Shimano XT M8100, long cage |
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| Crank | Shimano XT M8120, 30T, 55mm chainline, 170mm length |
| Shifters | Shimano XT M8100, 12 speed |
| Cassette | Shimano XT M8100, 10-51, 12 speed |
| Chain | Shimano Ultegra/XT M8100, 12 speed |
| Brakes | Shimano XT M8120 4-piston hydraulic disc Type: Hydraulic Disc |
Wheels
| Rims | Front: Size: S, Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 27.5”; Size: M, ML, L, XL, Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29”, Rear: Size: S, Bontrager Line Comp 30, High Strength 6000 Series Aluminum rim, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 27.5”; Size: M, ML, L, XL, Bontrager Line Comp 30, High Strength 6000 Series Aluminum rim, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 29” |
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| Tires | Size: S, Bontrager Gunnison RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 27.5×2.40”; Size: M, ML, L, XL, Bontrager Montrose RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 29×2.40”; Size: M, ML, L, XL, Bontrager Gunnison RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 29×2.40” |
| Disc Rotors | Shimano RT86, 6-bolt, 180mm |
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