## Namura NA-50012R Piston Rings - Reliability and Performance for Your Engine Often overlooked, piston rings play a crucial role in ensuring optimal engine performance. They are responsible for cylinder sealing, proper lubrication, and heat dissipation. Namura NA-50012R piston rings, designed for pistons with diameters of 86.93mm, 86.94mm, and 86.95mm, guarantee top quality and long-lasting performance. ### Advanced Materials and Technologies Namura, a renowned manufacturer of motorcycle parts, uses carefully selected materials and advanced technologies in the production of NA-50012R piston rings. The type of cylinder sleeve, its coating, engine size, and piston stroke – all these factors are taken into account during the design process to ensure a perfect fit and optimal performance under all conditions. ### Compression Rings The compression rings, made of highly ductile cast iron or stainless steel alloy, are characterized by excellent wear resistance and provide a tight seal for the combustion chamber. Additional chrome, phosphate, or nitride coatings enhance their durability and corrosion resistance. ### Oil Rings Oil rings consist of three components: two scraper rings made of highly ductile cast iron or stainless steel alloy with a chrome, nitride, or phosphate coating, and one expander ring made of stainless steel. This ensures efficient lubrication and prevents oil from entering the combustion chamber. By choosing Namura NA-50012R piston rings, you are investing in the reliability and longevity of your engine.