... speed: 50km/h5. Max load: 135kg6. Motor color: Black with sliver7. Rim material: Double-wall aluminium alloy8. Rim ... detail:Brushless Hub Motor 48V 1000W for Rear Wheel: 36V 200W Brushless Spoke Motor Motor Net ... Speed, 5-speed, six speed, seven speed4.Available Wheel Size: 20", 24", 26", 27" 700C, 28 ... the existing front wheel or rear wheel on your bike2. Screw on the Wheel that comes with the kit3. ...