2026 Trek Top Fuel 8 Gen 4 Mountain Bike
- Brand:: Trek
- Product Code: 5319313
- Availability: In Stock
2026 Trek Top Fuel 8 Gen 4 Mountain Bike
Top Fuel 8 Gen 4 is a nimble alloy trail bike that strikes a balance between quick climbing efficiency and descending confidence. It packs in a versatile 130mm front and 120mm rear travel for ripping over rocks and roots without sacrificing power on ascents. It's built from lightweight Alpha Platinum Aluminum that helps save your budget for bike trips, but packs in upgrades where they matter, like a 12-speed Shimano XT and SLX drivetrain, and a Fox Rhythm 34 fork.
SPECIFICATIONS:
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; Fury Red |
|---|---|
| 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 |
| REAR SHOCK |
Fox Performance Float DPS, 2-position damper, 185mm x 50mm Travel: 120mm |
| BOTTOM BRACKET | Shimano BB-MT501 BSA |
| STEM | Bontrager Elite, 35mm, 0° rise, 45mm length |
| HANDLEBAR | Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width |
| SADDLE | Bontrager Verse P3, chromoly rails |
| SEATPOST |
Bontrager Line Dropper, MaxFlow, internal routing, 34.9mm S: 100mm travel, 310mm length M / ML / L / XL: 170mm travel, 450mm length Type: Dropper |
| GRIPS |
Bontrager XR Trail Comp / Trek Line Comp, nylon lock-on Sizes: S, M, ML, L, XL |
| REAR DERAILLEUR | Shimano XT M8100, long cage |
| CRANKSET | Shimano Deore M6120, 30T, 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: Shimano Deore Hydraulic Disc |
| WHEELS / RIMS |
Front: Bontrager Line Comp 30 TLR, 6-bolt, Boost110 Rear: Bontrager Line Comp 30 Boost TLR, Rapid Drive 108, Boost148 Sizes: 27.5" (S) / 29" (M–XL) |
| TIRES |
Bontrager Gunnison Pro XR, Tubeless Ready, 60 TPI S: 27.5 x 2.40" M / ML / L / XL: 29 x 2.40" |
| DISC ROTORS | Shimano RT66, 6-bolt, 180mm |