... motorcycle K90 cylinder head 1.Size: Custom 2.Process:die-casting 3.Material:aluminum alloy High precision die casting ... motorcycle K90 cylinder headPrecision die casting products 1.Type:motorcycle aluminum die-casting cylinder head ... ,deburring,polishing,spray paint,CMM,spectrometer test.5.High temperature treatment:water quenching and tempering,quenching,carburizing ...