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NEW 2020

Fuel EX 8

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$4,199.99 Model 29458

Fuel EX 8 is the ideal trail bike for mountain bikers who want a versatile full suspension ripper that can crush marathon and multi-stage races and still huck with the enduro crew. It hits the sweet spot of value and performance in our mountain bike lineup with an Alpha Aluminum frame, 140mm front and 130mm rear suspension, and SRAM GX Eagle 12-speed drivetrain.

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It's right for you if...

You're cool with your wheels leaving the ground, but you also like to go the distance on marathon singletrack sessions and aim to clear every rock garden on the first try. You want exceptional trail bike performance, with the same MTB frame and suspension tech found on higher-end trail bikes, at an exceptional value.

The tech you get

A lightweight Alpha Platinum Aluminum frame, a 140mm FOX Rhythm 34 fork and 130mm of rear travel with a FOX Performance Float shock with Trek's exclusive RE:aktiv damper—it's enough suspension to go big while staying fast on the flats and climbs. A SRAM GX Eagle 1x12 drivetrain with a wide-range 10-50 cassette, Tubeless Ready Bontrager Line Comp 30 wheels, Shimano Deore hydraulic disc brakes, and a Bontrager Line dropper post for on-the-fly saddle height adjustments.

The final word

It's a trail bike that is fully capable keeping up with whatever you throw at it. It has the same frame and suspension tech found on our top-of-the-line trail bikes, with a SRAM GX Eagle 1x12 drivetrain that delivers a huge range of gearing with the simplicity of a single shifter.

See it in action

favorite_borderWhy you'll love it

  1. This bike is perfect for shredding singletrack, hitting drops, and pushing your limits in multi-stage and marathon events
  2. If you measure quality in performance per dollar, you won't do better than Fuel EX 8
  3. You sense its capability immediately, like when you're charging through sections of trail you never thought you'd clean
  4.  The shifter-style, underbar remote dropper post lever is super intuitive and easy to use
  5. We expanded our size range to ensure a better fit for all riders. And, you get the fastest wheel that fits your frame: XS frames get 27.5˝ wheels, S frames get to choose between 27.5˝ or 29˝, and sizes M to XL get 29˝ wheels


Features

Will my bike have a curved top tube?

Smaller frames (XS and S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame Alpha Platinum Aluminum, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel
Fork Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel
*Shock Size: XS , S
Fox Performance Float EVOL, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 210x52.5mm
Size: S , M , ML , L , XL , XXL
Fox Performance Float EVOL, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 210x55mm
Wheels
Front Wheel Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
Rear Wheel Bontrager Line Comp 30, Tubeless Ready, 6-bolt, SRAM XD driver, Boost148, 12mm thru axle
*Tire Size: XS , S
Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.60''
Size: S , M , ML , L , XL , XXL
Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60''
Drivetrain
Shifter SRAM GX Eagle, 12 speed
Rear Derailleur SRAM GX Eagle
*Crank Size: XS , S
Truvativ Descendant 6k Eagle, DUB, 30T steel ring, Boost, 170mm length
Size: M , ML , L , XL , XXL
Truvativ Descendant 6k Eagle, DUB, 30T steel ring, Boost, 175mm length
Bottom Bracket SRAM DUB, 92mm, PressFit
Cassette SRAM XG-1275 Eagle, 10-50, 12 speed
Chain SRAM GX Eagle, 12 speed
Components
Saddle Bontrager Arvada, hollow chromoly rails, 138mm width
*Seatpost Size: XS , S
Bontrager Line Dropper, 100mm travel, internal routing, 31.6mm, 345mm length
Size: M , ML , L , XL , XXL
Bontrager Line Dropper, 150mm travel, internal routing, 31.6mm, 440mm length
Handlebar Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width
Grips Bontrager XR Trail Elite, alloy lock-on
*Stem Size: XS , S
Bontrager Line, 35mm, Knock Block, 0 degree, 40mm length
Size: M , ML , L , XL , XXL
Bontrager Line, 35mm, Knock Block, 0 degree, 50mm length
Headset Knock Block Integrated, cartridge bearing, 1-1/8'' top, 1.5'' bottom
Brake Shimano Deore M6000 hydraulic disc
Brake Rotor Shimano RT66, 6-bolt, 180mm



  • Weight

    Weight
    M - 14.42 kg / 31.79 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

    Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorized Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

     

    Rider Height

    Inseam

    All measurements provided in cm unless otherwise stated.

    Frame size number Frame size letter Geometry position Wheel size A — Seat tube B — 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
    13.5 XS High 27.5" 35.5 75.5° 9.0 66.5° 54.5 34.1 1.4 43.5 4.3 10.7 111.9 70.0 40.0 55.9
    13.5 XS Low 27.5" 35.6 75.0° 9.0 66.0° 55 33.5 2.1 43.7 4.3 11.1 112.0 69.5 39.5 56.3
    15.5 S High 27.5" 35.5 75.5° 10.0 66.5° 56.7 34.1 1.4 43.5 4.3 10.8 114.3 70.6 42.0 56.8
    15.5 S Low 27.5" 39.5 75.0° 10.0 66.0° 56.8 33.5 2.1 43.7 4.3 11.1 114.4 70.1 41.5 57.2
    15.5 S High 29" 39.5 75.5° 10.0 66.5° 57.7 34.6 2.8 43.5 4.3 11.5 115.3 70.6 42.0 60.5
    15.5 S Low 29" 39.5 75.0° 10.0 66.0° 57.8 33.9 3.4 43.7 4.3 11.9 115.4 70.1 41.5 60.8
    17.5 M High 29" 42.0 75.5° 10.0 66.5° 60.2 34.6 2.8 43.5 4.3 11.6 117.8 74.8 44.5 60.5
    17.5 M Low 29" 42.0 75.0° 10.0 66.0° 60.3 33.9 3.4 43.7 4.3 11.9 117.9 74.2 44.0 60.8
    18.5 ML High 29" 43.5 75.5° 10.5 66.5° 61.8 34.6 2.7 43.5 4.3 11.6 119.5 75.1 46.0 60.9
    18.5 ML Low 29" 43.5 75.0° 10.5 66.0° 61.9 33.9 3.4 43.7 4.3 11.9 119.6 74.5 45.5 61.3
    19.5 L High 29" 45.0 75.5° 10.5 66.5° 63.3 34.6 2.7 43.5 4.3 11.6 121.0 75.6 47.5 60.9
    19.5 L Low 29" 45.0 75.0° 10.5 66.0° 63.4 33.9 3.4 43.7 4.3 11.9 121.1 75.0 47.0 61.3
    21.5 XL High 29" 50.0 75.5° 12.0 66.5° 66.1 34.6 2.7 43.5 4.3 11.6 124.1 76.8 50.0 62.3
    21.5 XL Low 29" 50.0 75.0° 12.0 66.0° 66.3 33.9 3.4 43.7 4.3 11.9 124.2 76.2 49.5 62.7
    23 XXL High 29" 54.0 75.5° 14.0 66.5° 68.6 34.6 2.7 43.5 4.3 11.6 126.9 80.6 52.0 64.1
    23 XXL Low 29" 54.0 75.0° 14.0 66.0° 68.8 33.9 3.4 43.7 4.3 11.9 127.0 80.0 51.5 64.5

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