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2021-22 Trek Powerfly 4
Powerfly 4 is our most affordable electric mountain bike. It's built with parts that hold up, like a smooth-shifting Shimano drivetrain, 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 you never thought you'd reach on a mountain bike.
Specifications
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Frameset |
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Frame |
Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148, 12mm thru axle |
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*Fork |
Size: XS |
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SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 80 mm travel |
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Size: S , M , L , XL |
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SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel |
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Size: S , M , L , XL |
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SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44mm offset, Boost110, 15mm thru axle, 120mm travel |
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Max compatible fork travel |
120mm (XS & S: 100mm) |
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Wheels |
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Hub front |
Formula DC-511, 6-bolt, Boost110, 15mm thru axle |
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Hub rear |
Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle |
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Skewer rear |
Bontrager Switch thru-axle, removable lever |
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Rim |
Bontrager Connection, double-wall, 32-hole, 20mm width, presta valve |
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Spokes |
14 g stainless steel |
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*Tire |
Size: XS , S |
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Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35" |
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Size: M , L , XL |
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Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30" |
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Max tire size |
Frame: 29x2.60" or 27.5x2.8" (XS & S: 27.5x2.60") Fork: See manufacturer |
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Drivetrain |
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Shifter |
Shimano Deore M4100, 10 speed |
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Rear derailleur |
Shimano Deore M5120, long cage |
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Crank |
FSA Bosch CK-220, 36T ring, 165 mm length |
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Cassette |
Shimano Deore M4100, 11-46, 10 speed |
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Chain |
KMC X10, 10 speed |
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Pedal |
VP-536 nylon platform |
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Max chainring size |
38T |
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Components |
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Saddle |
Bontrager Commuter Comp |
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*Seatpost |
Size: XS , S |
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Bontrager alloy, 31.6mm, 12mm offset, 330mm length |
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Size: M |
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Bontrager alloy, 31.6mm, 12mm offset, 360mm length |
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Size: L , XL |
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Bontrager alloy, 31.6mm, 12mm offset, 400mm length |
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*Handlebar |
Size: XS , S |
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Bontrager alloy, 31.8mm, 15mm rise, 720mm width |
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Size: M , L , XL |
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Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
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Grips |
Bontrager XR Endurance Comp, lock-on |
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*Stem |
Size: XS |
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Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 50mm length |
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Size: S , M |
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Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length |
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Size: L , XL |
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Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 70mm length |
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Headset |
FSA IS-2, 1-1/8'' top, 1.5'' bottom |
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Brake |
Tektro HD-M275 hydraulic disc |
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Brake rotor |
Tektro, 6-bolt, 203 mm |
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Accessories |
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Battery |
Bosch PowerTube 500 |
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Charger |
Bosch compact 2A (100-240V) charger |
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Controller |
Bosch Purion |
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Motor |
Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 20mph or 32km/h max assist |
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Weight |
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Weight |
M - 51.52 lbs / 23.37 kg |