I checked and the X-Treme XB504 electric bicycle specifications shows that it has a 500 Watt brushless hub motor. You could put 1000 Watt controller on the bike but the motor would most likely run hot and could possibly overheat and burn out as a result. It would be best to keep the controller at between 500-750 Watts so the motor runs cool and does not overheat.
I have a 3 wheel electric bike from beijixing electric its 48v 500w
phase angle 120
break pulse low
the bike is to fast for kids I want to reduce the speed by changing the controller, I have learned that there is a controller which can be shorted to have a half effect speed, can anyone help me which controller should I buy in replacement for my current controller