## Namura Piston Rings 91.458mm NA-80001-2R - Reliability and Performance for Your Engine Namura 91.458mm NA-80001-2R piston rings are a key component for optimal engine performance, efficiency, and longevity. Often overlooked, these rings play a vital role in ensuring combustion chamber sealing and proper lubrication. Namura, known for high-quality motorcycle and scooter parts, designs its rings for specific applications, taking into account the type of cylinder sleeve, its coating, engine size, and stroke type (2 or 4). ### Advanced Materials and Technologies Namura utilizes advanced materials and technologies to ensure excellent wear resistance and sealing. Both compression and oil rings are made of high-quality materials such as ductile cast iron or stainless steel alloy. Additionally, depending on the model, chrome, phosphate, and nitride coatings are applied to meet the demands of the specific engine. ### Compression Rings Namura compression rings provide excellent combustion chamber sealing, minimizing pressure loss and maximizing engine performance. Their high-quality construction guarantees long life and reliability. ### Oil Rings Oil rings consist of three components: two scraper rails made of ductile cast iron or stainless steel, coated with chrome, nitride, or phosphate, and a single expander ring made of stainless steel. The purpose of the oil rings is to precisely meter the oil, preventing it from entering the combustion chamber and ensuring proper cylinder lubrication. ### Technical Parameters: * Piston Diameter: 91.458mm By choosing Namura NA-80001-2R piston rings, you are investing in quality and reliability, which translates to a longer lifespan and better performance for your engine.