## Piston Rings 84.00mm Namura NA-40005-4R - Reliability and Performance for Your Engine Namura 84.00mm NA-40005-4R piston rings are a key component for optimal performance, efficiency, and longevity of your motorcycle or scooter engine. Often overlooked, piston rings play a vital role in ensuring combustion chamber sealing and proper lubrication. Namura, a renowned manufacturer of motorcycle parts, offers piston rings designed for specific applications, guaranteeing a perfect fit and reliability. ### Advanced Materials and Technologies Namura utilizes high-quality materials and advanced technologies in the production of its piston rings. The type of cylinder sleeve, sleeve coating, engine size, and piston stroke (2 or 4 stroke) are all taken into account when selecting the optimal material composition of the rings, ensuring a perfect match for the operating conditions. ### Compression Rings Namura 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 Namura oil rings consist of three separate components: two scraper rings made of highly ductile cast iron or stainless steel, coated with chrome, nitride, or phosphate, and a single expander ring made of stainless steel. This design ensures efficient removal of excess oil and maintains optimal lubrication levels, minimizing engine wear and emissions. ### Namura Precision and Quality By choosing Namura 84.00mm NA-40005-4R piston rings, you invest in quality and precision, which translates into longer engine life, better performance, and lower operating costs. Thanks to the use of advanced materials and technologies, Namura rings provide reliable operation in all conditions.