Trek Top Fuel 8 Gen 4
$2,519.00
The Trek Top Fuel 8 Gen 4 is an aluminum trail mountain bike with an Alpha Platinum Aluminum frame, Fox Rhythm 34 130mm fork, Fox Performance Float DPS shock, Shimano XT and SLX 12-speed drivetrain parts, Bontrager Line Comp 30 wheels, and Shimano 4-piston hydraulic disc brakes.
Trek Top Fuel 8 Gen 4 Overview
The Trek Top Fuel 8 Gen 4 is an aluminum full-suspension trail mountain bike built around an Alpha Platinum Aluminum frame with 120mm travel. The frame includes internal storage, a tapered head tube, internal guided routing, a downtube guard, alloy rocker link, 4-way Mino Link, ABP suspension design, and Boost148 spacing.
The suspension package uses a Fox Rhythm 34 fork with 130mm travel and a Fox Performance Float DPS shock with a 2-position damper. The drivetrain features Shimano XT M8100 12-speed shifting, a Shimano XT M8100 long cage rear derailleur, Shimano SLX M7100 10-51T cassette, Shimano Deore M6120 crank, and Shimano SLX M7100 chain. Bontrager Line Comp 30 Tubeless Ready wheels, Bontrager Gunnison Pro XR tires, and Shimano 4-piston hydraulic disc brakes complete the build.
Key Features of Trek Top Fuel 8 Gen 4
- Alpha Platinum Aluminum frame includes internal storage, guided internal routing, downtube guard, ABP, Boost148 spacing, and 120mm travel.
- Fox Rhythm 34 fork uses a Float EVOL air spring, GRIP damper, 44mm offset, and 130mm travel.
- Fox Performance Float DPS shock includes a 2-position damper and measures 185mm x 50mm.
- Shimano XT and SLX drivetrain parts provide 12-speed shifting with a 10-51T cassette.
- Bontrager Line Comp 30 wheels are Tubeless Ready and use Boost hub spacing.
- Size-specific wheel setup uses 27.5″ wheels on size S and 29″ wheels on sizes M, ML, L, and XL.
- Bontrager Line Dropper seatpost comes with 100mm travel on size S and 170mm travel on sizes M, ML, L, and XL.
- Shimano 4-piston hydraulic disc brakes use Shimano RT66 180mm rotors.
Ride Use
This bike is built for trail mountain biking, supported by its Alpha Platinum Aluminum full-suspension frame, 120mm frame travel, Fox Rhythm 34 130mm fork, and Fox Performance Float DPS shock. The Shimano XT and SLX drivetrain parts, tubeless-ready wheels, Bontrager Gunnison Pro XR tires, and 4-piston hydraulic disc brakes match the trail-focused category.
Why Choose This Bike
The Trek Top Fuel 8 Gen 4 combines an aluminum trail frame, Fox suspension, Shimano XT and SLX drivetrain parts, Bontrager Line Comp 30 Tubeless Ready wheels, and Shimano 4-piston hydraulic disc brakes in one complete build. It also includes a Bontrager Line alloy handlebar, Bontrager Elite stem, Bontrager Verse P3 saddle, Bontrager Line Dropper seatpost, Bontrager BITS Internal Frame Storage Bag, and two color options: Matte Dark Web and Fury Red. Trek frames and full-suspension swing arms are covered for the lifetime of the original owner, with other parts covered under Trek’s limited warranty.
Product Specifications
| Feature | Details |
|---|---|
| Brand | Trek |
| Model | Top Fuel 8 Gen 4 |
| Bike Type | Trail Mountain Bike |
| Color | Matte Dark Web, Fury Red |
| 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 |
| Fork | Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 130mm travel |
| Shock | Fox Performance Float DPS, 2-position damper, 185mm x 50mm |
| Shifter | Shimano XT M8100, 12-speed |
| Rear Derailleur | Shimano XT M8100, long cage |
| Crank | Shimano Deore M6120, 30T ring, 55mm chainline, 170mm length |
| Bottom Bracket | Shimano BB-MT501 BSA |
| Cassette | Shimano SLX M7100, 10-51T, 12-speed |
| Chain | Shimano SLX M7100, 12-speed |
| Brakes | Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper |
| Brake Rotors | Shimano RT66, 6-bolt, 180mm |
| Wheels | Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110 front, Boost148 rear, Rapid Drive 108 rear hub, Shimano Micro Spline freehub |
| Wheel Size | Size S: 27.5"; Size M, ML, L, XL: 29" |
| Tires | Size S: Bontrager Gunnison Pro XR, Tubeless Ready, wire bead, 60 tpi, 27.5x2.40"; Size M, ML, L, XL: Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.40" |
| Tire Part | Bontrager TLR sealant, 6oz |
| Max Tire Size | Frame: 29x2.50"; Fork: see manufacturer |
| Handlebar | Bontrager Line alloy, 35mm, 27.5mm rise, 780mm width |
| Stem | Bontrager Elite, 35mm, 0 degree, 45mm length |
| Grips | Bontrager XR Trail Comp nylon lock-on or Trek Line Comp nylon lock-on |
| Saddle | Bontrager Verse P3, chromoly rails |
| Seatpost | Bontrager Line Dropper, MaxFlow, internal routing, 34.9mm; 100mm travel on S, 170mm travel on M, ML, L, and XL |
| Accessory | Bontrager BITS Internal Frame Storage Bag |
| Weight | M - 14.58 kg / 32.15 lbs with TLR sealant, no tubes |
| Weight Limit | 300 pounds / 136 kg combined weight of bicycle, rider, and cargo |
| Manufacturer Warranty | Trek frames and full-suspension swing arms are covered for the lifetime of the original owner. Other parts are covered under Trek’s limited warranty. |
FAQ's Trek Top Fuel 8 Gen 4
What frame does the Trek Top Fuel 8 Gen 4 use?
The bike uses an Alpha Platinum Aluminum frame with 120mm travel. The frame includes internal storage, internal guided routing, a tapered head tube, downtube guard, alloy rocker link, 4-way Mino Link, ABP, and Boost148 spacing.
What drivetrain comes on the Trek Top Fuel 8 Gen 4?
This model uses Shimano XT and Shimano SLX 12-speed drivetrain parts. The build includes a Shimano XT M8100 shifter, Shimano XT M8100 long cage rear derailleur, Shimano SLX M7100 10-51T cassette, Shimano Deore M6120 crank, and Shimano SLX M7100 chain.
What wheel size does the Trek Top Fuel 8 Gen 4 use?
Size S uses 27.5" Bontrager Line Comp 30 Tubeless Ready wheels. Sizes M, ML, L, and XL use 29" Bontrager Line Comp 30 Tubeless Ready wheels.
What is included with the Trek Top Fuel 8 Gen 4?
The bike includes the complete bicycle and a Bontrager BITS Internal Frame Storage Bag. The size M bike weighs 14.58 kg / 32.15 lbs with TLR sealant and no tubes.
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