Include??Rear Clutch Assembly?? Front Clutch Assembly??669 18 Gates Beltssembly;Gates 669 18 belts Fit GY6 50cc 139QMB 4 Stroke Engine Rear Clutch Splines: 22 toothSize??Bell OD:115mm;ID:105mm?? Front Clutch Assembly Size: Drive face hole diameter 14mm??diameter 90 mm Please carefully check the appearance, size, shape, of the goods before purchase, and compare with the original goods, thank you.?? fit_type Universal part_number 02 High Performance Clutch Assembly Set Fit GY6 50cc scooter 139QMB Engine Go Kart ATV Quad Moped