Upgrade your GY6 engine's performance and reliability with this complete High-Performance Ignition System Kit. Designed for 50cc, 125cc, and 150cc 4-stroke engines, the kit includes a Racing Ignition Coil, 6-Pin AC CDI, Voltage Regulator/Rectifier, Solenoid Relay. It delivers a stronger spark for improved combustion, smoother acceleration, and enhanced durability. Directly compatible with most Chinese scooters/ATVs (Kymco, Jonway, Roketa, TaoTao, Kazuma, etc.), Honda TRX200/TRX250 ATVs, Go-Karts, and Mopeds. Provides a simple plug-and-play solution to replace worn components or boost stock ignition performance. Confirm specific model compatibility before purchase.