## Namura NA-50011R Piston Rings 96.57mm - Reliability and Performance Namura NA-50011R piston rings with a diameter of 96.57mm are a key element ensuring optimal performance, efficiency, and engine longevity. Often overlooked, these rings play a vital role in ensuring the tightness of the combustion chamber and proper cylinder lubrication. Namura, known for its high-quality motorcycle and scooter parts, designs its rings for specific applications, taking into account the type of cylinder sleeve, its coating, engine size, and stroke type (2 or 4). ### Advanced Materials and Technologies The materials used to manufacture Namura NA-50011R piston rings are one of the most important factors influencing their performance. Both compression and oil rings are made of durable alloys, providing excellent wear resistance. ### Compression Rings Made of highly ductile cast iron or stainless steel alloy, the compression rings guarantee the tightness of the combustion chamber. Additional chrome, phosphate, or nitride coatings increase their resistance to wear and corrosion, adapting them to specific operating conditions. ### Oil Rings Oil rings consist of three elements: two scraper rings made of ductile cast iron or stainless steel, and one expander ring made of stainless steel. Chrome, nitride, or phosphate coatings on the scraper rings ensure optimal lubrication and prevent excessive cylinder wear. By choosing Namura NA-50011R piston rings, you are investing in the reliability and longevity of your engine.