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.
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Trek Powerfly FS 4 Electric Mountain Bike 2020
The Trek Powerfly FS 4 Electric Mountain Bike uses Bosch’s Performance CX 250W motor to add assistance up to 25kph, with four modes that can be selected on the fly from the handlebar remote. Turbo - 340%, Tour - 140%, Eco - 60% and eMTB which intelligently adds between 140-340% depending on the conditions. The 500Wh battery is mounted in the downtube, leaving room for a bottle cage, and is removable without tools for easy in-house charging.
Aside from the motor, the bike features an Alpha Platinum Aluminium frame and SR Suntour XCR 34 fork, both with 130mm travel for better off-road comfort and control. The 2.35" tyres add traction and cushioning, with the 27.5” wheels keeping the handling nimble. Tektro HD-M275 hydraulic disc brakes relish wet weather and mud, giving predictable stopping power in all conditions whilst the ever-reliable Shimano Deore drivetrain makes gear selection intuitive.
- Trek Alpha Platinum Aluminium frame with R.I.B and 130mm of travel
- SR Suntour XCR 34 fork with 130mm of travel
- Shimano 10-speed Deore groupset
- Tektro HD-M275 hydraulic disc brakes
- 27.5” wheels with 2.35” tyres
- Bosch Performance CX 250W motor and 500Wh removable battery
|FRAME||Trek Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Knock Block, Control Freak internal routing, Motor Armor, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel|
|FORK||SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44mm offset, Boost110, 15mm bolt-on thru-axle, 130mm travel|
|REAR SHOCK||RockShox Deluxe RL, 205x50mm|
|STEM||Bontrager Rhythm Comp, 31.8mm, Knock Block, 0 degree|
|HANDLEBAR||Bontrager alloy, 31.8mm, 15mm rise|
|FRONT BRAKE||Tektro HD-M275 hydraulic disc|
|REAR BRAKE||Tektro HD-M275 hydraulic disc|
|REAR DERAILLEUR||Shimano Deore M6000, mid cage, 42T max cog|
|SHIFT LEVERS||Shimano Deore M6000, 10-speed|
|CASSETTE||SunRace, 11-42, 10-speed|
|CRANKSET||FSA 310, 15t with chain guard|
|FRONT WHEEL||Formula DC-511, 6-bolt, Boost110, 15mm thru-axle rim with Bontrager Connection, double-wall, 32 hole, 20mm width, Presta valve|
|REAR WHEEL||Formula DC-511, 6-bolt, Boost110, 15mm thru-axle rim with Bontrager Connection, double-wall, 32 hole, 20mm width, Presta valve|
|FRONT TYRE||Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35" clincher|
|REAR TYRE||Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35" clincher|
|SADDLE||Bontrager Arvada, steel rails|
|SEATPOST||Bontrager alloy, 31.6mm, 12mm offset|
|BATTERY||Bosch PowerTube, 500Wh|
|MOTOR||Bosch Performance CX, 250W, 75Nm, 25kph max assist|
|WEIGHT LIMIT||136kg (bike, rider and cargo)|