36V 250W Bafang Mid Drive Motor BBS01B Electric Bicycle Engine Ebike Conversion Kit with 22.5Ah Rear Rack Lithium Battery Kits|Electric Bicycle Motor| - AliExpress
Bafang 8fun 48v 500w Electric Bicycle Conversion Kit Mm G340.500 Mid Drive E Bike Motor With 48v 13ah 17ah 18ah E-bike Battery - Electric Bicycle Motor - AliExpress