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.
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.
Why you'll love it
- Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy remove the battery without tools and lets you mount a water bottle cage
- This bike expands boundaries: the top-notch Bosch system is equally suited to commuting, recreation and a ridiculously fun time on the trails
- The Intuvia controller has Walk Assist and an intelligent e-MTB mode that automatically delivers the right amount of power based on your terrain
- It's equipped with an external charging port for easy charging on or off the bike
- You can boost your Powerfly’s utility by adding a rack and mudguards, plus built-in wiring lets you easily install lights powered by the motor
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Frame size number | Frame size letter | Wheel size | A — Seat tube | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
13.5" | XS | 27.5" | 36.3 | 70.0° | 12 | 65.0° | 57.9 | 32.8 | 3.7 | 45.5 | 5.1 | 11.4 | 113.5 | 70.6 | 35.2 | 62.1 |
15.5" | S | 27.5" | 39.4 | 71.5° | 13 | 67.6° | 59.8 | 30.7 | 4.9 | 45.5 | 4.2 | 10.1 | 112.5 | 72.1 | 39 | 62.3 |
17.5" | M | 29" | 41.9 | 71.7° | 13 | 67.7° | 61.7 | 32.4 | 4.9 | 45.5 | 5.1 | 9.8 | 115.5 | 79.4 | 40.6 | 63.9 |
19.5" | L | 29" | 47 | 71.7° | 14 | 67.7° | 64.1 | 32.4 | 5 | 45.5 | 5.1 | 9.8 | 118 | 81.6 | 42.7 | 64.8 |
21.5" | XL | 29" | 52.1 | 71.7° | 16 | 67.7° | 67.2 | 32.4 | 5 | 45.5 | 5.1 | 9.8 | 121.2 | 81.8 | 45.2 | 66.7 |
- FRAME:
- Size: XS , S Alpha Platinum Aluminium, curved top tube, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armour, Boost148, 12 mm thru axle Size: M , L , XL Alpha Platinum Aluminium, Removable Integrated Bat
- FORK BRAND:
- SR Suntour
- FORK:
- SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, Boost110, 15 mm thru axle, Size XS: 80 mm travel Size S , M , L , XL: 120mm
- FORK TRAVEL:
- 120 mm
- 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
- 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" Size: M , L , XL Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30"
- MAX TYRE SIZE:
- Frame: 29x2.60" or 27.5x2.8" (XS and S: 27.5x2.60") Fork: See manufacturer
- WHEEL SIZE:
- 29
- SHIFTER:
- Shimano Deore M4100, 10 speed
- REAR DERAILLEUR:
- Shimano Deore M5120, long cage
- CRANK:
- FSA Bosch CK-220, 36T ring, 165 mm length
- CHAINRING:
- FSA, 36T, steel
- CASSETTE:
- Shimano Deore M4100, 11-46, 10-speed
- CHAIN:
- KMC X10, 10-speed
- PEDAL:
- Wellgo VPE-536
- 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
- DROPPER SEATPOST:
- No
- GRIPS:
- Bontrager XR Endurance Comp, lock-on
- STEM:
- Size: XS Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length Size: S , M Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length Size: L , XL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length
- HEADSET:
- FSA IS-2, 1-1/8" top, 1.5" bottom
- BRAKE ROTOR:
- Tektro, 6-bolt, 203 mm
- BRAKE SET:
- Tektro HD-M275 hydraulic disc
- MOTOR:
- Bosch
- DRIVE UNIT:
- Bosch Peformance Line CX (85 Nm ) Smart System
- BATTERY:
- Bosch PowerTube 625 Wh Battery
- CHARGER:
- Bosch standard 2A, 230V, smart system
- MODEL YEAR:
- Previous Models
- Availability:
- Please see above
- Please note:
- Trek 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, colours, and materials