1.Diameter of cylinder:58mm 1.motorcycle 1motorcycle parts2.ISO/TS 16949 ... pin,piston kits,conrod, conrod bearing, eccentric shaft,liner,cylinder head, valve and so on.5.For European,Austrilia ... 's request.7.We can promise that our quality of the product is very high! We (Shandong Zhenting ... so on.Our company is the exclusive assembly factory of Zongshen,a famous motorcycle producing company in my country ...