MORTCH New JOG 50cc Racing AC CDI 5 PIN for 2 Stroke Chinese Scooter Moped ATV Go Karts High performance "no rev limit" 5-pin racing capacitor discharge ignition or air-cooled Minarelli 1PE40QMB 2-stroke enginess with a 50cc displacement Increase your acceleration and performance with a simple "plug and play" switch of your CDI Dimension: L=2.89", Width=1.45", Thickness=1.17" This 5-pin CDI has 3 single pins and a 2-pin female plug.