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.
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.
Why you'll love it
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
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
The long-range battery is secure while you ride and easy to remove for charging in any household electrical socket
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
Buy Trek Powerfly FS 4 2019 EU Mens Full Suspension E-Bike Grey online