## Piston Rings 98.94mm Namura NA-50019R - Reliability and Performance for Your Engine The Namura NA-50019R piston rings with a diameter of 98.94mm are a key component ensuring optimal performance, efficiency, and longevity of your motorcycle or scooter engine. Often overlooked, piston rings play a crucial role in sealing the combustion chamber and regulating oil flow. Namura, renowned for high-quality motorcycle parts, offers piston rings designed for the specific requirements of various engine types. ### Advanced Materials and Technologies The materials used in the production of Namura NA-50019R piston rings are one of the most important factors influencing their performance. The type of cylinder sleeve, its coating, engine size, and piston stroke (2 or 4 stroke) - all these factors are considered when selecting the appropriate material composition for optimal operation under given conditions. ### Compression Rings Made of highly ductile cast iron or stainless steel alloy, the compression rings 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 separate components: two scraper rings made of highly ductile cast iron or stainless steel, coated with chrome, nitride, or phosphate, and one expander ring made of stainless steel. Their task is precise oil metering, minimizing its consumption and preventing it from entering the combustion chamber. ### Choose Namura Quality By choosing Namura NA-50019R piston rings, you invest in the reliability and longevity of your engine. Precision manufacturing, high-quality materials, and advanced technologies guarantee optimal performance and trouble-free operation.