Motorcycle Scooter Speedometer Drive Gear For JOG50 BWS100 3KJ ZR JOG90 4DM 50 YW50 Minarelli 1E40QMB This speedometer drive gear is designed for use with specific motorcycle and scooter models including JOG50, BWS100, 3KJ, ZR, JOG90, 4DM, 50, YW50, and engines compatible with Minarelli 1E40QMB.It connects to the speedometer and helps transmit wheel rotation data for accurate speed measurement.The gear fits standard housings and is engineered for performance in small displacement two-wheel vehicles.Installation requires proper alignment with the front fork assembly where the speedometer interfaces with the wheel hub.