Complete "inner rotor" type racing CDI ignition kit. This kit bolts into place and eliminates the key and all of the stock XR50R wiring. Save weight and increase power and throttle response. This kit also allows you to advance or retard the timing for extra fine tuning. This is a complete kit that comes with the following: - Super sized, super powerful coil - Rotor - Stator - Kill switch - Mounting hardware