Trek Powerfly 4 625wh Gen 4
The Powerfly 4 625 takes our most affordable electric mountain bike and gives it a boost with a longer-range 625 watt-hour battery. Of course, you still get our user-friendly Removable Integrated Battery (RIB) system that's super easy to remove and reinstall, plus all the other parts that make Powerfly 4 your ideal entry into the joys of riding a pedal-assist bike on or off road.
It's right for you if...
You're sold on the e-bike revolution and want the capability and versatility of a mountain bike at a price that doesn't resemble the car you're trying to use less. You want bigger, better off-road adventures, and know that an e-MTB with the latest user-friendly tech is the best way to get them.
The tech you get
A tough yet refined aluminium frame that fully encases a long-range 625 Wh battery for sleek looks, a Bosch Performance Line CX (250 W, 85 Nm) motor that assists up to 20 mph (25 km/h in Europe), a Bosch Intuvia smart system controller, a 1x10 Shimano drivetrain and a suspension fork with lockout. Plus, Smart Wheel Sizing means riders of every size get a great fit – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames.
The final word
This model gives you longer range battery than the standard Powerfly 4, so you’ll never be short on fun.
Specifications
| Frame | Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armour, Boost148, 12 mm thru axle |
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| *Fork |
Size: XS 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 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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| Max compatible fork travel | 120 mm (526 mm axle-to-crown), XS and S: 100 mm (492 mm axle-to-crown) |
| Hub front | Formula DC-511, 6-bolt, Boost110, 15 mm 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 |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| Rim | Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve |
| *Tyre |
Size: XS , S Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35" |
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Size: M , L , XL Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30" |
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| Max tyre size | Frame: 29x2.60" or 27.5x2.8" (XS and S: 27.5x2.60") Fork: See manufacturer |
| Shifter | Shimano Deore M4100, 10 speed |
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| Rear derailleur | Shimano Deore M5120, long cage |
| Crank | FSA Bosch CK-220, 36T ring, 165 mm length |
| Cassette | Shimano Deore M4100, 11-46, 10-speed |
| Chain | KMC X10, 10-speed |
| Max. chainring size | 38T |
| Saddle | Bontrager Commuter Comp |
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| *Seatpost |
Size: XS , S Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length |
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Size: M Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length |
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Size: L , XL Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length |
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| *Handlebar |
Size: XS , S Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width |
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Size: M , L , XL Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width |
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| Grips | Bontrager XR Endurance Comp, lock-on |
| *Stem |
Size: XS Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
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Size: S , M Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length |
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Size: L , XL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length |
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| Head set | FSA IS-2, 1-1/8" top, 1.5" bottom |
| Brake rotor | Tektro, 6-bolt, 203 mm |
| Brake Set | Tektro HD-M275 hydraulic disc |
| Rotor size | Max brake rotor sizes: Front see fork manufacturer, rear 203 mm |
| Battery | Bosch PowerTube 625 Wh, smart system |
|---|---|
| Controller | Bosch LED remote, smart system |
| Motor | Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm, 20 mph or 32 km/h max assist (25 km/h max assist in EU and APAC) |
