48 Volt 1200 Watt Bafang 8fun Mid Drive Crank Motor BBS02 With 12 Ah Lithium Down Tube Mounted Battery Most Powerful USA Legal Electric Bike Kit on the Market Produces Over 1200 Watts Max While Still Being Rated At 750 Watts Nominal Includes Everything You Need To Convert Almost Any Bike To A Powerful Electric Bike Including the Battery Choose Multiple Pedal Assist Modes Or Use Throttle Only Easy Installation With Included Instructions and Works With Any Rear Gearset