This is a complete pedal assist control system that can be used with the Solar Bike electric hub motors. It has everything required except motor and battery. They come in either a 36V 250 Watt option (road-legal) or 1000 48V Watt option (off-road only).
The kit includes a controller, KD51C display, throttle, pedal sensor and brake levers. There are also outputs on the controller for ebike lights, these can be purchased separately.