Powerfly FS 9 | Trek Bikes (GB)
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NEW 2019

Powerfly FS 9

£5,000.00 Model 23262

Powerfly FS 9 is a full suspension electric mountain bike that gives you the traction and capability of a true mid-fat trail bike with the added benefit of a powerful Bosch motor. 27.5+ tyres, a 1x12 SRAM GX Eagle drivetrain, and 130 mm front and rear suspension with a RockShox Pike RC fork deliver incredible performance on even the most rugged trails.

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It's right for you if...

Capability is key. You're looking for the full performance package in your e-MTB, and it's especially important that your trail bike has the suspension and parts spec that will hold up on gnarly trails, give you the traction to scramble up loose climbs and help you take on bigger all-mountain adventures.

The tech you get

A durable Alpha Platinum Aluminium frame that fully encases a long-range 500 Wh battery for great aesthetics and protection on the trail, a Bosch Performance CX motor and a Purion controller. Plus, 130 mm front and rear travel with a RockShox Pike RC fork with an ultra-smooth Charger2 damper, grippy 27.5+ mid-fat tyres, a Bontrager Line dropper post and a SRAM GX Eagle drivetrain. The Tubeless Ready Bontrager Powerline Comp 40 wheels are made specifically for the rigours of e-MTB use, and the 4-piston XT brakes provide extra stopping power.

The final word

The latest in e-MTB frame design, a powerful Bosch motor, 27.5+ mid-fat tyres, and a major upgrade in drivetrain and suspension give Powerfly FS 9 an incredible amount of capability on rugged all-mountain rides.

The Walkthrough

2019 Powerfly FS

favorite_borderWhy you'll love it

  1. Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy remove the battery without tools and lets you mount a water bottle cage – even on full suspension e-MTBs
  2. This model gets parts chosen specifically for e-MTB use, like Shimano XT 4-piston brakes and stout Powerline Comp wheels
  3. It rides like a mountain bike because it is one: it has the same frame and suspension tech that we've refined in our decades-long trail heritage
  4. When you power down the assist, you have a fully capable trail bike that's ready to take on rugged terrain
  5. Even when the trail gets rough, the wide 27.5+ tyres deliver more confidence, traction and stability

More options



  • Frameset

    Alpha Platinum Aluminium, ABP, Removable Integrated Battery (RIB), EVO link, tapered head tube, Knock Block, internal derailleur and dropper post routing, G2 Geometry, Boost148, 130mm travel
    Front suspension
    RockShox Pike RC, DebonAir, Charger 2 damper, lockout, tapered steerer, Boost110, G2 Geometry, 130 mm travel
    Rear suspension
    RockShox Deluxe RL, 205x50 mm
  • Wheels

    Bontrager Powerline Comp 40, 54T Rapid Drive, Tubeless Ready, Boost110 front, Boost148 rear, tubeless strips included, valves sold separately
    Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120 tpi, aramid bead, 27.5x2.80˝
  • Drivetrain

    SRAM GX Eagle single-click, 12 speed
    Rear derailleur
    SRAM GX Eagle, Roller Bearing Clutch
    SRAM X1, 15T w/chain guard
    SRAM XG-1230 Eagle, 11-50, 12-speed
    SRAM NX Eagle
    VP-536 nylon platform
  • Components

    Bontrager Arvada, hollow chromoly rails
    Bontrager Line, internal routing, 31.6 mm, 15.5: 100 mm, 17.5 & 18.5: 125 mm, 19.5 & 21.5: 150 mm
    Bontrager Line, 35 mm, 15 mm rise, 750 mm width
    Bontrager XR Trail Elite, alloy lock-on
    Bontrager Line, Knock Block, 35 mm clamp, 0-degree
    Head set
    Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom
    Brake set
    Shimano Deore XT M8020 4-piston hydraulic disc
  • Accessories

    Bosch PowerTube 500 Wh
    Bosch Purion
    Bosch Performance CX
  • Weight

    17.5˝ - 23.22 kg / 51.2 lbs (with tubes)
    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.


Rider Height

All measurements provided in cm unless otherwise stated.

Frame size number 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
15.5 in High 27.5" 36.8 72.9° 10 67.4° 57 33.8 1.8 47.4 5.1 9.3 117.6 77.5 39.9 58.9
17.5 in High 27.5" 41.9 72.9° 10 67.4° 60 33.8 1.8 47.4 5.1 9.3 120.7 76.5 43.5 58.8
18.5 in High 27.5" 44.5 72.9° 10.5 67.4° 62 33.8 1.8 47.4 5.1 9.3 122.7 75.3 46.1 59.2
19.5 in High 27.5" 47 72.9° 11 67.4° 63.4 33.8 1.8 47.4 5.1 9.3 124.2 75.1 47.3 59.2
21.5 in High 27.5" 52.1 72.9° 12.5 67.4° 66.2 33.8 1.8 47.4 5.1 9.3 127.2 76.3 49.7 60.9

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