Top Fuel 8 Gen 4
Top Fuel 8 Gen 4 is a nimble alloy trail bike that strikes a balance between quick climbing efficiency and descending confidence. With 130mm front and 120mm rear travel, it conquers rocks and roots without sacrificing power on ascents, featuring a lightweight Alpha Platinum Aluminum frame and high-quality Shimano XT and SLX drivetrain.
30 Day Return Policy
Please note, bikes may not look exactly as pictured and components are subject to change
Need to Know
KEY FEATURES
PERFECT FOR
Why we like the Trek Top Fuel 8 Gen 4
Lightweight Frame and Versatile Geometry
The Alpha Platinum Aluminum frame is lightweight and features adjustable geometry, making it suitable for a wide range of riding conditions and styles.
High-Performance Drivetrain and Suspension
Equipped with a Shimano XT/SLX drivetrain and FOX suspension, this bike ensures smooth shifting and control on various terrains.
Internal Storage and Upgrade Potential
The frame includes internal storage for gear and snacks, and is designed for easy future upgrades, ensuring long-term value and performance.
The Breakdown | Stats
Frame
Aluminum
Fork
Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle
Front Travel
130mm
Shock
Fox Performance Float DPS, 2-position damper, 185mm x 50mm
Rear Travel
120mm
Drivetrain
Shifter
Shimano XT M8100, 12 speed
Rear Derailleur
Shimano XT M8100, long cage
Crankset
Shimano Deore M6120, 30T ring, 55mm chainline, 170mm length
Chain
Shimano SLX M7100, 12 speed
Cassette
Shimano SLX M7100, 10-51T, 12 speed
Brakeset
Shimano M6120 4-piston hydraulic disc, M6100 lever, M6120 caliper
Rotors
Shimano RT66, 6-bolt, 180mm
Bottom bracket
Shimano BB-MT501 BSA
Cockpit
Headset
Integrated, cartridge bearing, 1-1/8” top, 1.5” bottom
Handlebar
Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width
Stem
Bontrager Elite, 35mm, 0 degree, 45mm length
Saddle
Bontrager Verse P3, chromoly rails
Dropper Post
Bontrager Line Dropper
Dropper Lever
Bontrager Line Dropper, 100mm travel (S); 170mm travel (M, ML, L, XL), MaxFlow, internal routing, 34.9mm
Grips
Bontrager XR Trail Comp, nylon lock-on
Wheels
Wheelset
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle (front); Bontrager Line Comp 30, High Strength 6000 Series Aluminum rim, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle (rear)
Front Axle
Bontrager alloy, 6-bolt, Boost110, 15 mm thru-axle
Rear Axle
Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle
Hubs
Bontrager
Tires
Bontrager Gunnison Pro XR, Tubeless Ready, wire bead, 60 tpi, 27.5x2.40” (S); dual compound, aramid bead, 60 tpi, 29x2.40” (M, ML, L, XL)
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