Cylinder Piston Kit Piston Kit High Silicone Aluminum Alloy With Ring For 52cc 5200 For Chainsaw Feature:1. It has strong thermal diffusion ability because a lightweight high-silicon aluminum alloy2 is used. The thermal conductivity is increased by 42% and it has a good thermal match with the piston and reduces the weight of the whole machine3. Increasing the strength of the machine body and improving the surface hardness due to one-piece molding4. Greatly improved wear resistance, corrosion resistance and high temperature impact resistance, safer to use5. The interchangeable kit is small in size and light in weight, reduces the difficulty of operation, is very convenientSpecification:Item Type: Cylinder Piston KitMaterial: High Silicone Aluminum AlloyCylinder Diameter: Approx. 45mm/1.8inPackage List:1 x Cylinder1 x Piston1 x Piston Pin2 x Clamping Ring2 x Piston Ring2 x Gasket