munirater High Performance Racing Ignition Coil with Spark Plug+AC CDI Replacement for GY6 50cc 125cc 150cc

DescriptionThis is a high performance racing CDI. Its 6pins, this CDI works with the for GY6 type plug on it, with an AC ignition system. This CDI is similar to our orange performance CDI but has a more aggressive ignition advance curveHow to distinguish CDI box with AC fired or CDI box with DC fired?1. In the for GY6 6-plug set-up. You have AC if you have 3-wires going into the 4-plug side and 2-wires going into the 2-plug side. On the other hand, you have DC if you have the larger CDI box, 3 or 4 wires going into the 4-plug side and only 1-wire going into the 2-plug side.2. If headlights turn on without the engine running(with just the key on), it is a DC system. In the AC system, turning  headlights on require the engine to be running. Another indication is, if the engine will only runs with a battery it is DC. If it will runs without a battery, it is a AC system.Package Includes1 x Ignition Coil1 x  AC CDI Box (6-pin)1 x Spark Plug (A7TC)