HIFROM(TM 6-Pin Performance AC Racing CDI 50cc-150cc Scooters ATVs Go Karts GY6 Engine Vehicles 1. Please note: This AC CDI, not DC CDI. This AC CDI will eliminate rev-limit which keeps your bike restricted and reset your ignition advance curve for better acceleration. 2. Fits most Scooter, mopeds, ATVs, go karts with 4-stroke GY6 50cc to 150cc engine . 3. 2+4 Pin Round Plug , Fits some Japanese bikes with same plug and AC powered. 4. Fits most Chinese brands, like TaoTao, SUNL, Roketa, JCL, Kazuma, Coolsports, etc. 5. Size(L*W*H): 72*38*28mm; Color: Blue (Please check the pictures carefully before you buy it)