Feature 1Excellent lightweight highsilicon aluminum alloy, come with strong thermal diffusion ability 2Come with good thermal fit to the piston and reduces the weight of the whole machine, the thermal conductivity is increased by 42% 3Produced with onepiece forming, increase the strength of the machine body and improve the surface hardness 4Greatly improved wear resistance, corrosion resistance and high temperature impact resistance, sturdy and stable 5This replacement kit come with small size and light weight, reduce the difficulty of work, convenient to useSpecificationItem Type: Cylinder Piston KitMaterial: High silicon aluminum alloyCylinder Diameter: Approx. 44mm / 1.7in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Cylinder1 x Piston2 x Piston Circle2 x Piston Ring1 x Piston Pin2 x Gasket1 x Bearing