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Bafang 8FUN BBS01B 36V 250W Mid Drive Motor Conversion Kit for Road Bike Mountain Bike Mid Drive System with LCD Display, Optional 36V 10Ah/17.5Ah Battery with Charger

Bafang BBS02B 48V 750W Mid Drive Electric Bike Motor Ebike Conversion Kit Mid Motor for Mountain Bike Road Bike with Optional 48V 11.6Ah/17.5Ah and 52V 14Ah Battery