GY6 50cc Regulator Rectifier

Rectifier (voltage regulator) commonly used on GY6 4-stroke engines sizes 50cc-150cc.

The purpose of a rectifier is to prevent the capacitor from discharging prior to ignition (turning the key). Upon ignition, the rectifier stops charging the capacitor, allowing the capacitor to transfer the 400-600 Volt charge to the ignition coil.