## Namura Piston Rings 82.958mm NA-80004-4R - Reliability and Performance Namura 82.958mm NA-80004-4R piston rings are a key component for optimal engine performance. Although often overlooked, these rings have a huge impact on efficiency, durability, and combustion effectiveness. Namura, known for its high-quality motorcycle and scooter parts, offers a product made with precision and attention to detail. ### Advanced Materials and Technologies Namura uses carefully selected materials in the production of piston rings, such as highly ductile cast iron or stainless steel alloy. Both materials are characterized by excellent wear resistance and provide a tight seal. Additionally, depending on the model, chrome, phosphate, and nitride coatings are used to meet the requirements of specific applications. ### Compression Rings Compression rings, made of cast iron or stainless steel, guarantee the tightness of the combustion chamber, minimizing pressure loss and optimizing fuel combustion. Protective coatings further enhance their durability and resistance to extreme 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. The function of the oil rings is to precisely dose the oil, preventing excessive oil consumption and ensuring proper cylinder lubrication. ### Perfect Fit Namura 82.958mm NA-80004-4R piston rings are precisely matched to the piston diameter, guaranteeing optimal engine operation. By choosing Namura, you invest in quality and reliability.