Direct-Drive Hub Motor Conversion Kit w/ Pedal-Assist and Throttle On Demand functions. New programmable LCD! This electric bike conversion kit without battery pack, is for riders that want the simplicity and reliability of the 500w direct-drive hub motor and the option of supplying their own 36 volt or 48 volt battery pack. Direct-drive motors are strong, durable and long-lasting due to zero internal friction.Who's it for? This kit is ideal for heavier applications with total loads (rider and...