This kitset Controller is a replacement for the silver one included in the standard kit (24 or 36V to 350W). It is a very project for developing electronics assembly and programming skills and knowledge.

When the onboard microcontroller is optimised to suit the throttle being used more power is available for the motor. The optimisation involves programming the onboard Picaxe micro. 

Full assembly instructions come with the kit.

Instrustions and guidance are also available for programming the Picaxe.