30A / 800W Control Unit – To fit Revvi 18″ and 20″ Bikes with a 800w Motor To Fit 18″ and 20″ bikes with the 800w motor. ​Please note: Choose the control unit type that your bikes currently has. The control unit type is specific to your bike.
Option guide:
YES - On throttle: YES - I change the speed setting using the throttle
NO - Frame switch: NO - I change the speed setting using a switch on the frames top tube