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Trek Powerfly FS 4 500 WH Electric Mountain Bike 2021
Take your off-road adventures further with the Trek Powerfly FS 4 500 WH Electric Mountain Bike, a sturdy aluminium steed complete with 250W of assistance at up to 25km/h courtesy of the Bosch Performance CX motor, ideal for providing an extra push on climbs so no route is off-limits. This compact Bosch PowerTube 500 completes a full charge in around four and a half hours and is integrated into the frame for a sleek look, boasting simple, intuitive removal without the need for tools.
A plush suspension set up with 100mm of travel to the rear and 120mm of front suspension means this bike is more than comfortable on rugged terrain, soaking up bumps for a delightfully smooth ride over any roots or rocks the trail may throw at you, and it features a hydraulic lockout which comes in handy to stop any bobbing up climbs. The Shimano Deore 10-speed drivetrain is always ready for some hard-labour, delivering reliable shifting and a range of gears to suit undulating topography, whilst the TranzX dropper seatpost comes in handy to get weight low over the back wheel when sending it downhill. Stopping is stress-free and tackled with precision thanks to the Tektro HD-M275 hydraulic disc brakes, which perform in adverse weather and testing conditions alike.
Battery Specification
- Max Assist: 250w
- Motor Weight: 2.9kg
- Battery Power: Approximately 500Wh
- Charge Time: 100% charge, 4.5 hours with Standard Charger
Highlights
- Trek Alpha Platinum Aluminium frame with RIB
- SR Suntour XCR 34, air spring fork with 120mm travel
- Shimano Deore 10-speed components
- Tektro HD-M275 hydraulic disc brakes
- Bontrager wheels with 2.30” XR3 Comp tyres
- TranzX JD-YSP18 dropper seatpost gets the saddle out of the way quickly
- Bosch Performance CX 250W motor
- Bosch PowerTube 500 battery
Technical Specification
| Frame | Trek Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Knock Block, internal routing, Motor Armor, magnesium rocker link, rack and mudguard mount, ABP, Boost148, 100mm of travel |
| Fork | SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44mm offset, oversized crown for eMTB, Boost110, 15mm bolt-on thru axle, 120mm of travel |
| Rear Shock | SR Suntour Edge R, 190x45mm |
| Stem | Bontrager alloy, 31.8mm, Blendr compatible, 7 degree |
| Handlebar | Bontrager alloy, 31.8mm, 15mm rise |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| Front Brake | Tektro HD-M275 hydraulic disc |
| Rear Brake | Tektro HD-M275 hydraulic disc |
| Brake Levers | Tektro HD-M275 |
| Rear Derailleur | Shimano Deore M5120, long cage |
| Shift Levers | Shimano Deore M4100, 10-speed |
| Chain | KMC X10, 10-speed |
| Cassette | Shimano Deore M4100, 11-46, 10-speed |
| Crankset | FSA Bosch CK-220, 36T ring, 165mm length |
| Front Wheel | Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle hub, Alex MD35, Tubeless Ready, 32-hole, 35mm width, presta valve rim |
| Rear Wheel | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru-axle hub, Alex MD35, Tubeless Ready, 32-hole, 35mm width, presta valve rim |
| Front Tyre | Bontrager XR3 Comp, wire bead, 30tpi, 29x2.30" clincher |
| Rear Tyre | Bontrager XR3 Comp, wire bead, 30tpi, 29x2.30" clincher |
| Saddle | Bontrager Arvada, steel rails, 138mm width |
| Seatpost | TranzX JD-YSP18 dropper, internal routing, 31.6mm |
| Pedals | VP-536 nylon platform |
| Charge time | 100% charge, 4.5 hours with Standard Charger |
| Motor | Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm, 25km/h |
| Ui/Remote | Bosch Purion |
| Battery | Bosch PowerTube 500 |
| Charger | Bosch standard 4A (220-240 V) charger |