... :30.5mm2.Diameter of pin hole :20.02mm3.Piston for auto,motorcycle,diesel engines,universal gasoline engines as well as internal combustion ... , eccentric shaft,liner,cylinder head, valve and so on.5.For European,Austrilia,Southeast Asia, American,Korean,Japan and so on ... company is the exclusive assembly factory of Zongshen,a famous motorcycle producing company in my country.Our company covers an area ...