... conversion rear motor kits1.48V 1000W brushless rear motor detail:Brushless Hub Motor 48V 1000W for Rear Wheel: 36V 200W Brushless Spoke Motor Motor Net Weight: 3.5kgs Motor ... -speed, six speed, seven speed4.Available Wheel Size: 20", 24", 26", 27" 700C, 28"Electric bicycle kit, DIY yourself e-bike, ... , they will influence the freight! Disc Brake, 36V 200W Electric Bike Conversion Kits with Rear Wheel