Scooter Speedometer Drive Gear for GY6 50cc 125cc 150cc Scooter Parts 10mm This speedometer drive gear is designed to fit GY6 engine models with 50cc, 125cc, and 150cc displacements.It features a 10mm shaft diameter and is used to transmit rotational from the wheel to the speedometer , enabling accurate speed readings.The gear is constructed to match specifications for performance and smooth integration into the scooter's front hub assembly.Suitable for use in standard scooter configurations where a 10mm drive gear is required.