## Namura NA-10001-7R Piston Rings 87.73mm - Reliability and Performance Often overlooked, piston rings are crucial for engine performance, durability, and efficiency. The Namura NA-10001-7R piston rings with a diameter of 87.73mm guarantee quality and precision, ensuring optimal performance of your motorcycle or scooter. ### Advanced Materials and Technologies Namura uses the highest quality materials for the production of piston rings, such as highly ductile cast iron or stainless steel alloy. Furthermore, the rings are coated with chrome, phosphate, or nitride coatings, which increases their wear resistance and ensures tightness. The type of cylinder sleeve, its coating, engine size, and piston stroke (2 or 4 stroke) - all these factors are taken into account when designing Namura rings to ensure a perfect fit and optimal performance in all conditions. ### Compression Rings Compression rings, made of highly ductile cast iron or stainless steel alloy, guarantee excellent sealing and minimize compression losses. Additional chrome, phosphate, or nitride coatings increase their durability and wear resistance. ### Oil Rings The oil ring set consists of three components: two scraper rails 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. Their task is to effectively scrape excess oil, preventing it from entering the combustion chamber. ### Namura Brand - Synonym for Quality Namura is a renowned manufacturer of motorcycle and scooter parts, known for the high quality of its products. By choosing Namura NA-10001-7R piston rings, you are investing in the reliability and longevity of your engine.