Shop Nilight Drive Belt 669-18-30 Replacement for 4 Stroke GY6 49cc 50cc 139QMB Engine Premium CVT Drive Belts for Axis m200 Roketa Baja Tank Jmstar Taotao Jonway Vespa Scooter Moped ATV, 5 Pack #669 18 30 in high quality, support 2 year warranty. This GY6 drive belt replaces parts number # 669-18-30, 669 18 30, CVT drive belt for 4 stroke 49CC 50CC GY6 139QMB 1P39QMB engine. Check your part number and our fitment before placing an order.