Trek Powerfly 4 2020 Hardtail Electric Mountain Bike

Powerfly 4 is Trek’s most affordable electric mountain bike, built with dependable parts and a Bosch Performance CX motor. This bike enables you to expand your boundaries and reach destinations that you never thought you could by bike.

Powerfly 4 now comes with the same battery system as all of Trek’s more high end Powerfly models. the RIB Removal Integrated Battery system not only looks super sleek but is also super use friendly. The battery is fully hidden inside the frame to protect it from damage and wear and is easy to remove for charging and storage without the use of tools. It also enables you to mount a bottle cage on the downtube.

High end electric components from Bosch make for an incredibly versatile bike, equally suited to daily commutes, family rides at the weekend as well as bundles of fun on technical trails.

The Purion controller has a Walk Assist mode, and a variable intelligent eMTB mode that automatically delivers the optimum power assist depending on your terrain.

Check out Bosch’s Battery Range Calculator

Key Specifications

Frame – Alpha Platinum Aluminium
Fork – SR Suntour XCM 34, 120 mm travel
Drivetrain – Shimano Acera 9 speed
Brakes – Tektro HD-M275 hydraulic disc
Motor – Bosch Performance CX, 250 Watt, 75 Nm, 25 km/h max assist
Battery – Bosch PowerTube, vertical, 500 wh
Display – Bosch Purion
Full Specification
Frame – Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armour, Boost148, 12 mm thru axle
Fork – SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel
Number of Gears – 9
Shifters – Shimano Altus M2010, 9-speed
Chainset – FSA 310, 36 T w/chain guard
Chainrings – 36T
Cassette – Shimano HG200, 11-36, 9-speed
Chain – KMC E9S, 9-speed
Rear Derailleur – Shimano Acera M3000, Shadow design, long cage
Pedals – Not included
Rims – Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve
Front Hub – Formula DC-511, 6-bolt, Boost110, 15 mm thru axle
Rear Hub – Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle
Front Tyre – Bontrager XR3 Comp, wire bead, 30 tpi, 29×2.30″
Rear Tyre – Bontrager XR3 Comp, wire bead, 30 tpi, 29×2.30″
Front Brake – Tektro HD-M275 hydraulic disc
Rear Brake – Tektro HD-M275 hydraulic disc
Handlebars – Bontrager alloy, 31.8 mm, 15 mm rise
Grips – Bontrager XR Endurance Comp
Headset – FSA IS-2, 1-1/8″ top, 1.5″ bottom
Stem – Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree
Saddle – Bontrager Arvada, steel rails
Seatpost – Bontrager alloy, 31.6 mm, 12 mm offset