1.Different specifications of piston ring could be supplied. 2.Competitive price and good quality. 3.Professional service. The detailed ... shassis coil, rectifier, switch key,relay6. Engine: cylinder, piston kit, piston ring, clutch kit, clutch disk&plate, clutch fiber, clutch housing ... can supply all kinds of scooter spare parts ,engine parts and accessories Models:1: JOG50, SR50, YB50, YB80, YB100 ...