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Powerfly 8 FS Plus

Model 2931600-2017
  • 1.Colour :
  • 2.Size

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More power, more bike

Powerfly builds on its success with a new full suspension line-up that borrows from Trek’s proven off-road legacy.

The full suspension Powerfly makes mountain biking even more fun. The Bosch Performance CX pedal assist system makes for a supremely capable bike that allows you to go further and have more fun.

Key features

  • Trek MTB legacy makes Powerfly a true mountain bike
  • Knock Block frame defence protects from spinning handlebars
  • ABP gives you more confidence and control on the trail
  • Powerful central-mount Bosch motor, for speeds up to 20 mph



  • Frameset

    Alpha Platinum Aluminium, ABP, Boost148, EVO link, E2 tapered head tube, Mino Link, Knock Block steerer stop, internal derailleur and dropper post routing, 130mm travel
    Front suspension
    RockShox Yari RL, Solo Air, Motion Control damper, lockout, E2 tapered steerer, Boost110, G2 Geometry w/51mm offset, 130mm travel
    Rear suspension
    RockShox Deluxe RL, tuned by Trek Suspension Lab, 205x50mm
  • Wheels

    Bontrager sealed bearing, alloy axle hubs, Boost110 front, Boost148 rear; SUNringlé Duroc 40 SL 32-hole rims
    Front Hub
    Bontrager sealed bearing, alloy axle, Boost110
    Rear Hub
    Bontrager sealed bearing alloy axle, Boost148
    SUNringlé Duroc 40 SL 32-hole
    Bontrager Chupacabra, Tubeless Ready, Inner Strength sidewalls, aramid bead, 27.5x2.80"
  • Drivetrain

    Shimano Deore XT, 11-speed
    Rear derailleur
    Shimano Deore XT, Shadow Plus
    Miranda Delta, 15T
    Shimano M7000 SLX, 11-42, 11-speed
  • Components

    Bontrager Evoke 2, chromoly rails
    KS eThirty Integra, remote lever, 2-bolt head, 31.6mm, zero offset, internal routing
    Bontrager alloy, 31.8mm, 5mm rise, 750 width
    Bontrager inForm Evoke RL, lock-on, ergonomic
    Bontrager Rhythm Comp, Knock Block, 31.8mm, 0 degree
    Head set
    FSA Knock Block IS-2, E2, sealed alloy cartridge
    Brake set
    Shimano M615 Deore hydraulic disc, 203mm front/180mm rear rotors
  • Accessories

    Bosch Powerpack Performance 500 downtube
    Bosch Intuvia Performance
    Bosch Performance CX, 250 watt, 75Nm
  • Weight

    17.5" - 23.00 kg / 50.71 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
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 on Trek pre-production painted frames at the 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 authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

Frame size number Geometry position Wheel size 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 Frame rise
15.5 in Low 27.5" 36.8 71.5° 73.5° 10.0 66.9° 57.0 33.2 2.4 47.4 5.1 8.8 117.7 76.0 40.5 59.4 59.4
17.5 in Low 27.5" 41.9 71.5° 73.5° 10.0 66.9° 60.0 33.2 2.4 47.4 5.1 8.9 120.7 74.0 43.5 59.3 59.3
18.5 in Low 27.5" 44.5 71.5° 73.5° 10.5 66.9° 62.0 33.2 2.4 47.4 5.1 8.9 122.8 73.5 45.3 59.8 59.8
19.5 in Low 27.5" 47.0 71.5° 73.5° 11.0 66.9° 63.4 33.2 2.4 47.4 5.1 8.9 124.3 73.0 46.6 60.2 60.2
21.5 in Low 27.5" 52.1 71.5° 73.5° 12.5 66.9° 66.2 33.2 2.4 47.4 5.1 8.9 127.3 74.0 49.0 61.6 61.6

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