48V 500W Motor Rear Wheel Motor Electric Bike Conversion Kits for 20- 29in 700c Bicycle

China 48V 500W Motor Rear Wheel Motor Electric Bike Conversion Kits for 20-29in 700c Bicycle, Find details about China 48V 500W Motor, Rear Wheel Motor from 48V 500W Motor Rear Wheel Motor Electric Bike Conversion Kits for 20-29in 700c Bicycle