Performance Racing CDI Box for GY6 50cc 110cc 150cc 200cc 250cc Scooter Moped Go Kart ATV Fits most of the 50cc to 250cc ATVs, scooters, mopeds and go-karts. May also fit Honda XR50, XR70, CRF50, CRF70 and some of their copies. Connector: 2+4 Pin AC-fired It eliminates rev-limit that keeps your bike restricted and reset the ignition, gives 5 ~ 10 miles speed boost on your bike.