TSDZ2B tongsheng 48V 500W 750W 15A tsdz2 electric bicycle mid motor with torque | eBay
BAFANG BBS02 48V 750W Middle Motor BB 68mm/100mm E-Bike Conversion Kit with Battery 20Ah/18Ah/17.5Ah/15Ah/13Ah/12Ah 48V for Mountain Bike, Road Bike, Middle Motor Pedelec E-Motor DIY Conversion kit for Adults : Amazon.de: Sports