Trek Top Fuel 8 Gen 4 Bike 2025 Overview
Build
| Frame | Alpha Platinum Aluminum, 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; Lichen Green |
|---|---|
| Fork | Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 130mm travel Travel: 130mm Spring Type: Air |
| Shock | Fox Performance Float DPS, 2-position damper, 185mm x 50mm Travel: 120mm |
| Bottom Bracket | Shimano BB-MT501 BSA |
| Stem | Bontrager Elite, 35mm, 0 degree, 45mm length |
| Handlebar | Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width |
| Saddle | Bontrager Verse P3, chromoly rails |
| 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 Comp, nylon lock-on |
Groupset
| Rear Derailleur | Shimano XT M8100, long cage |
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| Crank | Shimano Deore M6120, 30T ring, 55mm chainline, 170mm length |
| Shifters | Shimano XT M8100, 12 speed |
| Cassette | Shimano SLX M7100, 10-51T, 12 speed |
| Chain | Shimano SLX M7100, 12 speed |
| Brakes | Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper 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 Pro XR, Tubeless Ready, wire bead, 60 tpi, 27.5×2.40”; Size: M, ML, L, XL, Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29×2.40” |
| Disc Rotors | Shimano RT66, 6-bolt, 180mm |
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