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NEW 2020

Top Fuel 8

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$3,299.99 Model 28012

Top Fuel 8 fuses the lightweight efficiency of a cross country bike with the capability and forgiveness of a trail bike. It's quick, nimble, and dishes out serious fun on flow trails and techy descents alike, with a 120mm RockShox fork, 115mm of rear travel, and a dropper post for getting low on the rough stuff. This bike is fully capable of shredding singletrack, racing grueling endurance events, and even holds its own on the XC course.

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It's right for you if...

You’re looking for a do-it-all full suspension mountain bike that balances efficiency with capability. You want to rip rough trails, do a couple XC races, and even test yourself with an endurance or stage race.

The tech you get

A lightweight Alpha Platinum Aluminum frame, 120mm RockShox Recon RL fork with Motion Control damper, 115mm of rear travel with a Fox Performance Float shock, and a 1x12 SRAM NX Eagle drivetrain. Plus, Shimano hydraulic disc brakes, TwistLoc dual remote suspension lockout, Bontrager Line Dropper, and Tubeless Ready Bontrager Kovee Comp 23 wheels.

The final word

Top Fuel 8 is an efficient, capable, and ridiculously fun short-travel full suspension trail bike. It's built to take on technical terrain, flowy XC courses, and the demands of endurance mountain bike races.

The Walkthrough

favorite_borderWhy you'll love it

  1. This short-travel trail bike gives you a suspension setup that’s capable in several MTB disciplines, and especially suited to endurance events
  2. TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
  3. Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride
  4. You get a Straight Shot down tube for extra stiffness in the rough and Knock Block frame defense to protect against spinning bars and fork crowns

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Features

Specifications

  • Frameset

    Frame
    Alpha Platinum Aluminum, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel
    Fork
    RockShox Recon RL, Solo Air spring, Motion Control damper, TwistLoc remote, tapered steerer, 46mm offset, Boost110, 15mm Maxle Stealth, 120mm travel
    Rear suspension
    Fox Performance Float, 2-postion DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45mm
  • Wheels

    Wheels
    Bontrager Kovee Comp 23, Tubeless Ready, 6-bolt, Boost110 front, Boost148 rear
    Tires
    Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40"
  • Drivetrain

    Shifters
    SRAM NX Eagle, 12 speed
    Rear derailleur
    SRAM NX Eagle
    Crank
    SRAM NX Eagle, DUB, 32T steel ring, Boost
    Bottom bracket
    SRAM DUB, 92mm, PressFit
    Cassette
    SRAM PG-1230 Eagle, 11-50, 12 speed
    Chain
    SRAM NX Eagle, 12 speed
  • Components

    Saddle
    Bontrager Arvada, steel rails
    Seatpost
    Bontrager Line Dropper, internal routing, 31.6mm
    Handlebar
    Bontrager Comp, alloy, 31.8mm, 15mm rise
    Grips
    SRAM TwistLoc
    Stem
    Bontrager Rhythm Comp, Knock Block, 31.8mm, 0 degree
    Headset
    Knock Block Integrated, cartridge bearing, 1-1/8" top, 1.5" bottom
    Brakeset
    Shimano hydraulic disc, MT501 lever, MT500 caliper
  • Weight

    Weight
    M - 13.81 kg / 30.45 lbs (with tubes)
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

 

Rider Height

Inseam

All measurements provided in cm unless otherwise noted.

Frame size number Frame size letter Geometry position A — Seat tube B — Seat tube angle Effective seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
15.5 S High 39.4 68.5° 75.5° 9.0 68.0° 56.3 34.3 3.0 43.4 4.4 10.3 111.7 72.0 41.0 59.0
15.5 S Low 39.4 68.0° 75.0° 9.0 67.5° 56.4 33.7 3.6 43.5 4.4 10.7 111.7 71.5 40.5 59.4
17.5 M High 41.9 68.5° 75.5° 9.0 68.0° 59.8 34.3 3.0 43.4 4.4 10.3 115.2 72.5 44.5 59.0
17.5 M Low 41.9 68.0° 75.0° 9.0 67.5° 59.9 33.7 3.6 43.5 4.4 10.7 115.2 72.0 44.0 59.4
18.5 ML High 44.5 68.5° 75.5° 9.0 68.0° 61.4 34.3 3.0 43.4 4.4 10.3 116.8 73.1 46.1 59.0
18.5 ML Low 44.5 68.0° 75.0° 9.0 67.5° 61.5 33.7 3.6 43.5 4.4 10.7 116.8 72.5 45.6 59.4
19.5 L High 47.0 68.5° 75.5° 10.0 68.0° 63.0 34.3 2.9 43.4 4.4 10.3 118.5 74.1 47.5 59.9
19.5 L Low 47.0 68.0° 75.0° 10.0 67.5° 63.2 33.7 3.6 43.5 4.4 10.7 118.6 73.5 47.0 60.3
21.5 XL High 52.1 68.5° 75.5° 11.0 68.0° 65.0 34.3 2.9 43.4 4.4 10.3 120.6 76.1 49.2 60.8
21.5 XL Low 52.1 68.0° 75.0° 11.0 67.5° 65.1 33.7 3.6 43.5 4.4 10.7 120.7 75.5 48.7 61.2
23.5 XXL High 55.9 68.5° 75.5° 12.0 68.0° 67.5 34.3 2.9 43.4 4.4 10.3 123.3 77.6 51.5 61.7
23.5 XXL Low 55.9 68.0° 75.0° 12.0 67.5° 67.7 33.7 3.6 43.5 4.4 10.7 123.4 77.0 51.0 62.2

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