## Namura NA-50002-4R Piston Rings 83.94mm - Reliability and Performance for Your Engine Namura NA-50002-4R piston rings with a diameter of 83.94mm are a key component for ensuring optimal performance, durability, and efficiency of your motorcycle or scooter engine. Although often overlooked, piston rings play a fundamental role in the proper functioning of the power unit. Namura, a brand known for high-quality components, offers a product designed with the specific requirements of the given application in mind. ### Advanced Materials and Technologies Namura NA-50002-4R piston rings are made of the highest quality materials, carefully selected for the specific application. The type of cylinder liner, its coating, engine size, and piston stroke (2 or 4 stroke) - all these factors influence the selection of the appropriate ring composition, guaranteeing optimal operation under all conditions. ### Compression Rings Namura NA-50002-4R compression rings are made of highly ductile cast iron or stainless steel alloy. Both materials are characterized by excellent wear resistance and provide a tight seal, minimizing compression losses. Depending on the model, these rings may also have chrome, phosphate, or nitride coatings, which further increases their durability and resistance to high temperatures and pressures. ### Oil Rings Namura NA-50002-4R oil rings consist of three separate components: two scraper rails made of highly ductile cast iron or stainless steel alloy and one expander ring made of stainless steel. The special design and selection of materials ensure effective scraping of excess oil, preventing it from entering the combustion chamber, thus reducing oil consumption and emissions. ### Technical Parameters * Piston Diameter: 83.94mm By choosing Namura NA-50002-4R piston rings, you are investing in the reliability and longevity of your engine.