## Namura NA-40080-4R Piston Rings 47.96mm - Reliability and Performance for Your Engine Often overlooked, piston rings play a crucial role in engine performance and durability. The Namura NA-40080-4R piston rings, with a diameter of 47.96mm, guarantee the highest quality and precision, ensuring optimal performance for your motorcycle or scooter engine. ### Advanced Materials and Technologies Namura utilizes only the highest quality materials in the production of the NA-40080-4R piston rings, such as ductile cast iron and stainless steel. The selection of the appropriate material and coating (chrome, phosphate, nitride) depends on the type of cylinder sleeve, sleeve coating, engine size, and stroke type (2 or 4-stroke). This guarantees a perfect fit and optimal operation under all conditions. ### Compression Rings Namura NA-40080-4R compression rings, made of highly ductile cast iron or stainless steel alloy, provide a tight seal, minimizing compression loss and increasing engine efficiency. Furthermore, chrome, phosphate, and nitride coatings enhance wear resistance, extending the life of the rings. ### Oil Control Rings The oil control rings consist of three components: two scraper rails made of ductile cast iron or stainless steel with a chrome, nitride, or phosphate coating, and a single expander ring made of stainless steel. This solution ensures efficient oil scraping, preventing oil from entering the combustion chamber and maintaining optimal lubrication. ### The Namura Brand - Synonymous with Quality Namura is a renowned manufacturer of motorcycle and scooter parts, known for the high quality of its products. By choosing Namura NA-40080-4R piston rings, you are investing in the reliability and longevity of your engine.