## Namura NA-40080R Piston Rings 46.96mm - Reliability and Performance Namura NA-40080R piston rings with a diameter of 46.96mm are a key element ensuring optimal engine performance for your motorcycle or scooter. Often underestimated, piston rings play a vital role in ensuring engine efficiency, durability, and sealing. Namura, a renowned manufacturer of motorcycle parts, creates piston rings from the highest quality materials, tailored to the specific requirements of the engine. ### Advanced Materials and Technologies The material from which the piston rings are made is crucial for their effectiveness. Namura uses highly ductile cast iron or stainless steel alloy, both characterized by excellent wear resistance and providing a tight seal. Additionally, depending on the model, chrome, phosphate, and nitride coatings are used to meet the demands of various engines. The type of cylinder sleeve, its coating, engine size, and piston stroke (2 or 4 stroke) - all these factors influence the selection of the optimal ring composition. ### Compression Rings Compression rings, made of highly ductile cast iron or stainless steel alloy, provide a tight seal of the combustion chamber, minimizing pressure loss and increasing engine efficiency. Additional chrome, phosphate, or nitride coatings increase their durability and wear resistance. ### Oil Rings Oil rings consist of three components: two scraper rails made of highly ductile cast iron or stainless steel alloy, coated with chrome, nitride, or phosphate, and one expander ring made of stainless steel. The task of the oil rings is precise oil metering, preventing it from entering the combustion chamber while ensuring proper lubrication of the cylinder sleeve. By choosing Namura NA-40080R piston rings, you invest in the reliability and longevity of your engine.