AC CDI High performance “no rev limit” 5-pin racing capacitor discharge ignition (CDI) module for air-cooled Minarelli 1PE40QMB 2-stroke engines with a 50cc displacement This is an alternating current (AC) CDI Description High performance “no rev limit” 5-pin racing capacitor discharge ignition (CDI) module for air-cooled Minarelli 1PE40QMB 2-stroke engines with a 50cc displacement. This is an alternating current (AC) CDI. These are among the most common 50cc scooter engines today and are produced by many manufacturers.Increase your acceleration and performance with a simple “plug and play” switch of your CDI. Acceleration, particularly on hills and steep inclines, will be greatly increased.Minarelli style engines are commonly found on Chinese made scooters, pit bikes, go karts, dirt bikes, and ATVs.Compatibility is based on matching wiring and connectors. Please ensure your make and model have the same connector and number of pins prior to ordering.This high performance