## Piston Rings 92.97mm Namura NA-50004-4R - Reliability and Performance for Your Engine Namura 92.97mm NA-50004-4R piston rings are a key component for optimal engine performance, efficiency, and longevity. Often overlooked, they play a vital role in ensuring combustion chamber sealing and proper lubrication. Namura, known for its high-quality motorcycle parts, provides piston rings designed for specific applications, guaranteeing excellent fit and reliability. ### Advanced Materials and Technologies The materials used in the manufacturing of Namura piston rings are crucial to their performance. The type of cylinder sleeve, its coating, engine size, and piston stroke – all these factors influence the selection of the optimal ring composition. Namura takes care of every detail to ensure a perfect fit for specific operating 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 gas-tight seal. 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 alloy, coated with chrome, nitride, or phosphate, and a single expander ring made of stainless steel. This design ensures efficient removal of excess oil, preventing it from entering the combustion chamber. ### Specifications: * Piston Diameter: 92.97mm * Brand: Namura By choosing Namura piston rings, you are investing in quality and reliability. Provide your engine with optimal operating conditions and enjoy trouble-free operation for a long time.