Trek
Top Fuel 8 Gen 4
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Geometry
Geometry
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Geometry
Geometry
Frame geometry
| Geometry | L | M | ML | XL | S |
|---|---|---|---|---|---|
| Stack | 604mm | 596mm | 600mm | 626mm | — |
| Reach | 486mm | 457mm | 472mm | 512mm | — |
| Headtube length | 115mm | 105mm | 110mm | 135mm | — |
| Headtube angle | 66.4deg | 66.4deg | 66.4deg | 65.9deg | — |
| BB height | 344mm | 344mm | 344mm | 338mm | — |
| BB drop | 29mm | 29mm | 29mm | 35mm | — |
| Trail | 115mm | 115mm | 115mm | 120mm | — |
| Fork length | — | — | — | — | — |
| Fork offset | 44mm | 44mm | 44mm | 44mm | — |
| Front center | — | — | — | — | — |
| Chainstay length | 439mm | 434mm | 439mm | 445mm | — |
| Wheelbase | 1224mm | 1184mm | 1207mm | 1268mm | — |
| Top tube | 629mm | 586mm | 609mm | 672mm | — |
| Standover height | 749mm | 745mm | 748mm | 747mm | — |
| Seat tube length | 435mm | 410mm | 420mm | 470mm | — |
| Seat tube angle | 76.8deg | 77.8deg | 77.1deg | 75.6deg | — |
Spec geometry
| Geometry | L | M | ML | XL | S |
|---|---|---|---|---|---|
| Crank length | 170mm | 170mm | 170mm | 170mm | 170mm |
| Stem length | 45mm | 45mm | 45mm | 45mm | 45mm |
| Handlebar width | 780mm | 780mm | 780mm | 780mm | 780mm |
| Handlebar reach | — | — | — | — | — |
| Handlebar drop | — | — | — | — | — |
| Saddle width | — | — | — | — | — |
| Dropper post travel | 170mm | 170mm | 170mm | 170mm | 100mm |
| Seatpost offset | — | — | — | — | — |
Specs
Full specs
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Specs
Full specs
Frame
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
Suspension
Rear shock
Fox Performance Float DPS, 2-position damper, 185mm x 50mm
Fork
Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 130mm travel
Brakes
Front brake
Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper
Rear brake
Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper
Front rotor
Shimano RT66, 6-bolt, 180mm
Rear rotor
Shimano RT66, 6-bolt, 180mm
Drivetrain
Shift levers
Shimano XT M8100, 12-speed
Rear derailleur
Shimano XT M8100, long cage
Cassette
Shimano SLX M7100, 12-speed, 10-51T
Chain
Shimano SLX M7100, 12-speed
Crankset
Shimano Deore M6120, 30T, 55mm chainline, 170mm length
Bottom bracket
Shimano BB-MT501, BSA
Cockpit
Stem
Bontrager Elite, 35mm, 0 degree, 45mm length
Handlebars
Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width
Grips
Bontrager XR Trail Comp, nylon lock-on OR Trek Line Comp, nylon lock-on (size S/M/ML/L/XL)
Saddle
Bontrager Verse P3, chromoly rails
Seatpost
Bontrager Line Dropper, MaxFlow, internal routing, 34.9mm — Size S: 100mm travel, 310mm length; Sizes M/ML/L/XL: 170mm travel, 450mm length
Wheels & Tires
Front wheel
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle — Size S: 27.5in; Sizes M/ML/L/XL: 29in
Rear wheel
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano Micro Spline freehub, Boost148, 12mm thru axle — Size S: 27.5in; Sizes M/ML/L/XL: 29in
Front tire
Bontrager Gunnison Pro XR, Tubeless Ready, 60 tpi — Size S: 27.5x2.40; Sizes M/ML/L/XL: 29x2.40
Rear tire
Bontrager Gunnison Pro XR, Tubeless Ready, 60 tpi — Size S: 27.5x2.40; Sizes M/ML/L/XL: 29x2.40
Weight
Weight
Size M: 14.58 kg / 32.15 lb (with TLR sealant, no tubes)