Glixal ATMT1-037 GY6 80cc 47mm Piston Set with Rings for 139QMB 139QMA Engine Scooter Moped ATV Go Karts JONWAY,JMSTAR,ROKETA,SUNL,TANK,PEACE,TAOTAO,Dongfang,Kazuma,JCL,BMS Used for GY6 80cc 47mm Cylinder Block GY6 80cc 4-stroke Piston, Rings, Pins and Clips Diameter of Piston (Bottom):47mm Height of Piston (Bottom to Top Middle):34.1mm Diameter of Piston Pin: 13mm