Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Trek Powerfly FS 4 625 WH Electric Mountain Bike 2022
Rugged and ready for off-road explorations, the Trek Powerfly FS 4 625 WH Electric Mountain Bike is a burly aluminium steed complete with a bump-smoothing suspension set up and a long-range battery to power the most epic rides. The Bosch Performance CX motor provides up to 250w of assistance at up to 15.5 mph / 25 km/h, ideal for sailing up climbs with an extra kick to conquer daring routes with serious elevation. The Bosch PowerTube 625 battery slots neatly into the downtube and can be removed without the need for tools for simplified charging, as well as completing a full charge in a little under five hours.
120mm of front suspension is provided by the SR Suntour fork, with 100mm of rear travel serving to soak up bumps and shocks for a smooth ride over rough, rugged terrain. 10-speed Shimano Deore components shift swiftly and provide enough gearing options to keep the legs spinning as gradients ramp up, whilst Tektro HD-M275 hydraulic disc brakes handle stopping duties with certainty. Utilise the TranzX dropper seatpost on sweeping bends and rapid descents to shift weight back and low over the rear wheel.
Browse our range of Trek electric mountain bikes today.
Battery Specification
- Max Assist: 250w
- Motor Weight: 2.9kg
- Battery Power: Approximately 625Wh
- Charge Time: 100% charge, 4.9 hours with Standard Charger
Highlights
- Trek Alpha Platinum Aluminium frame with RIB
- SR Suntour XCR 34, air spring fork with 120mm of travel
- Shimano Deore 10-speed components
- Tektro HD-M275 hydraulic disc brakes
- 29” wheels with 2.30” Bontrager XR3 Comp tyres
- TranzX JD-YSP18 dropper seatpost gets the saddle out of the way quickly
- Bosch Performance CX 250W motor
- Bosch PowerTube 625 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, 4.9 hours with Standard Charger |
| Motor | Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm, 25km/h |
| Ui/Remote | Bosch Purion |
| Battery | Bosch PowerTube 625 |
| Charger | Bosch standard 4A (220-240 V) charger |
| Electric assisted speed limit | 15.5 mph / 25 km/h |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.