Powerfly 4 is our most affordable electric mountain bike. It's built with parts that hold up, like a smooth-shifting Shimano drive train, and a powerful Bosch motor. Plus, it features our user-friendly Removable Integrated Battery (RIB) system that's fully encased in the frame yet doesn't require tools for removal. This bike expands your boundaries and lets you travel to destinations that you never thought you'd reach on a mountain bike.
Trek Powerfly 4 625wh 2021
Frame
Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148
*Fork
Size: XS
SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 80 mm travel
Size: S , M , L , XL
SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel
Wheels
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
Rim
Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve
Spokes
14 g stainless steel, black
*Tyre
Size: XS , S
Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35"
Size: M , L , XL
Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30"
Drivetrain
Shifter
Shimano Deore M4100, 10 speed
Rear derailleur
Shimano Deore M5120, long cage
Cassette
Shimano Deore M4100, 11-46, 10-speed
Chain
KMC X10, 10-speed
Pedal
VP-536 nylon platform
Components
Saddle
Bontrager Commuter Comp
*Seatpost
Size: XS , S
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
Size: M
Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
Size: L , XL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length