Powerfly FS 4 | Trek Bikes (GB)
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NEW 2019

Powerfly FS 4

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£3,200.00 Model 23253

Powerfly FS 4 is the gateway to more exciting trail adventures. It's a full suspension electric mountain bike that pairs the capability of a 130 mm trail bike with the power of a Bosch Performance CX motor. A 10-speed drivetrain, aluminium frame with a semi-integrated battery, pedal-assist up to 15.5 mph, and front and rear suspension help you take on more rugged trails with comfort and confidence.

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It's right for you if...

You like singletrack trails and want an e-MTB with a more capable full suspension set-up so you can take on more rugged adventures and stay comfortable and efficient when you do.

The tech you get

A durable Alpha Aluminium frame, a semi-integrated 500 Wh battery and a Bosch Performance CX motor with an ergonomic Purion controller. Plus, 130 mm front and rear travel, an SR Suntour XCR 34 suspension fork with an adjustable air spring, a 10-speed Shimano drivetrain and hydraulic disc brakes.

The final word

Full suspension lets you take on bigger, more technical trails. It's more comfortable, more efficient and faster in rough terrain. You're getting great parts and a powerful Bosch e-MTB system, but the biggest advantage of Powerfly FS 4 is the suspension package built for better riding on rugged trail adventures.

The Walkthrough

2019 Powerfly FS

favorite_borderWhy you'll love it

  1. For e-MTB, full suspension is a game-changer: it soaks up rugged terrain, so you can ride the Bosch pedal-assist system to its full potential
  2. 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
  3. The long-range battery is secure while you ride and easy to remove for charging in any household electrical socket

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Features

Specifications

  • Frameset

    Frame
    Alpha Platinum Aluminium, ABP, EVO link, tapered head tube, Knock Block, internal derailleur and dropper post routing, semi-integrated battery, G2 Geometry, Boost148, 130 mm travel
    Front suspension
    SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, Boost110, G2 Geometry w/51 mm offset, 130 mm travel
    Rear suspension
    RockShox Deluxe RL, 205x50 mm
  • Wheels

    Front hub
    Bontrager Boost110
    Rear hub
    Bontrager sealed bearing alloy axle, Boost148
    Rims
    Bontrager Connection 32-hole double-walled
    Tyres
    Bontrager XR3, 27.5x2.35
  • Drivetrain

    Shifters
    Shimano Deore M6000, 10 speed
    Rear derailleur
    Shimano Deore M6000, Shadow Plus
    Crank
    FSA 310, 15T w/chain guard
    Cassette
    SunRace, 11-42, 10-speed
    Chain
    KMC X10
    Pedals
    VP-536 nylon platform
  • Components

    Saddle
    Bontrager Arvada
    Seatpost
    Bontrager alloy, 2-bolt head, 31.6 mm, 12 mm offset
    Handlebar
    Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
    Grips
    Bontrager XR Trail Comp, nylon lock-on
    Stem
    Bontrager Rhythm Comp, Knock Block, 31.8 mm clamp, 0-degree
    Head set
    Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom
    Brake set
    Tektro HD-M275 hydraulic disc
  • Accessories

    Battery
    Bosch Powerpack, 500 Wh, downtube
    Controller
    Bosch Purion
    Motor
    Bosch Performance CX
  • Weight

    Weight
    17.5˝ - 24.04 kg / 53 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 33.3 1.8 47.4 5.1 9.3 117.6 77 39.9 58.9
17.5 in High 27.5" 41.9 72.9° 10 67.4° 60 33.3 1.8 47.4 5.1 9.3 120.7 76 43.5 58.8
18.5 in High 27.5" 44.5 72.9° 10.5 67.4° 62 33.3 1.8 47.4 5.1 9.3 122.7 74.8 46.1 59.2
19.5 in High 27.5" 47 72.9° 11 67.4° 63.4 33.3 1.8 47.4 5.1 9.3 124.2 74.6 47.3 59.2
21.5 in High 27.5" 52.1 72.9° 12.5 67.4° 66.2 33.3 1.8 47.4 5.1 9.3 127.2 75.8 49.7 60.9

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