[suicideneil]

Depends on the motor. One like a neu which only has short wires coming from the motor must'nt have them trimmed as they are actually extensions of the windings from within the motor- solder on extensions or use bullets & extension to reach the esc. Cutting them down will soldering them very difficult as they are coated with epoxy as they enter/exit the can.

A motor like the castleneu can have its wires trimmed as they are only that long for convenience's sake (make them long enough for everyone and let them trim as required). I wouldnt cut them down too much though incase you want to use the setup in a different vehicle in the future- leave at least a couple inches from the motor.