Motorcycle 12mm Scooter Speedometer Drive Gear and Line Speedometer compatible with GY6 50cc 100 125 150cc ATV and electric car spare parts.This drive gear connects the speedometer to the transmission output shaft, transmitting rotational to enable accurate speed measurement.The set includes a speedometer drive gear and assembly designed to fit and small vehicles using the GY6 engine platform.It is used for replacing worn or damaged components in the speedometer system to restore proper function.The gear is engineered for durability and consistent performance in standard operating conditions.