500 Watt electric assist kit specifically designed for Nihola tricycles. Powerful direct drive motor with thumb throttle and 5 levels of automatic pedal assist. Standard system is 36 volt with a 10 ah rear rack battery that will provide up to 40 miles of range for most users, or choose a 20 ah cabin battery for double the range. Kit includes everything needed to add electric assist to a Nihola. We strongly recommend having this work done by a qualified shop unless you are very familiar with setting up a geared derailleur system and adjusting chain length.