## Namura NA-30160-4R Piston Rings 58.97mm - Reliability and Performance The Namura NA-30160-4R piston rings with a diameter of 58.97mm are a key element ensuring 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, known for its high-quality parts, designs its rings for specific applications, taking into account the type of cylinder liner, its coating, engine size, and piston stroke. ### Advanced Materials and Technologies Namura uses carefully selected materials for the production of piston rings, such as highly ductile cast iron or stainless steel alloy, providing excellent wear resistance and sealing. Additionally, depending on the model, chrome, phosphate, and nitride coatings are used to meet the requirements of a specific engine. ### Compression Rings Compression rings, made of cast iron or stainless steel, guarantee the tightness of the combustion chamber, which translates into optimal compression and engine power. Chrome, phosphate, or nitride coatings further enhance their durability and resistance to high temperatures. ### Oil Rings Namura oil rings consist of three components: two scraper rings, made of cast iron or stainless steel with a chrome, nitride, or phosphate coating, and one expander ring made of stainless steel. Their task is to precisely dose the oil, preventing it from entering the combustion chamber and minimizing oil consumption. ### Choose Namura Quality By choosing Namura NA-30160-4R piston rings, you invest in the reliability and performance of your engine. Precision manufacturing, high-quality materials, and advanced technologies guarantee long-lasting and trouble-free operation.