Scooter Speedometer Drive Gear For Gy6 49 50 150 Scooter 12mm This speedometer drive gear is designed for use with GY6 engine models commonly found in 49cc, 50cc, and 150cc.It features a 12mm shaft diameter and connects to the scooter's front wheel hub to accurately transmit rotational speed to the speedometer.The gear proper speed reading by maintaining consistent engagement with the drive mechanism.Suitable for standard scooter configurations, it supports of the speed measurement system.Installation requires compatibility verification with the existing wheel and speedometer assembly.This component is produced by an independent manufacturer.Brand names are used for compatibility illustration.