669-18-30 Drive Belt for 4 stroke 49CC 50CC GY6 139QMB 1P39QMB engine Scooter, ATV, Go Kart, Moped. Fit Models: GY6 49CC 50CC ROKETA TAOTAO VESPA JONWAY SCOOTERS, MOPED, GO KART & ATV. Diameter: 669 mm. Width: 18 mm. Pitch: 30 degrees. Package Includes 1X Drive Belt. Fit for most Chinese Scooters and ATV (VESPA, JONWAY, JMSTAR, ROKETA, SUNL, TANK, PEACE, TAOTAO, JCL, Coolsport, Kazuma) Product Description Product Description: BRAND NEW 669 18 30 CVT Drive Belt GY6 49CC 50CC ROKETA TAOTAO VESPA JONWAY SCOOTER. Fit Models: GY6 49CC 50CC ROKETA TAOTAO VESPA JONWAY SCOOTERS, MOPED, GO KART ATV. Diameter: 669 mm. Width: 18 mm. Pitch: 30 degrees. Package Includes: 1X Drive Belt. Drive Belt for 4 stroke 49CC 50CC GY6 139QMB 1P39QMB engine Scooter, ATV, Go Kart, Moped.