?MAZDA?piston, suitable for ZJ 1.3? engine diameter 75.5CM aluminum plated piston,20cr,16mncr5,20crmnti, uniform material, tinned treatment. High strength, high temperature resistance. The bottom adopts concave treatment to make the combustion chamber compact structure, small heat dissipation area, our piston has high strength, low density, low mass, light weight, good thermal conductivity, high temperature resistance, high pressure resistance, corrosion resistance, small expansion coefficient, and very good wear reduction and thermal strength. Suitable for high power engines. We can also make all kinds of pistons according to customer requirements, you can send pictures, send samples, or send the original factory part number, our company will be customized according to customer's specified requirements.