## Namura NA-40011-2R Piston Rings 84.95mm - Reliability and Performance for Your Engine While often overlooked, piston rings play a crucial role in engine performance, durability, and efficient combustion. Namura NA-40011-2R piston rings with a diameter of 84.95mm guarantee quality and precision, ensuring optimal operation of your motorcycle or scooter. ### Advanced Materials and Technologies Namura utilizes the highest quality materials and advanced technologies in the production of its piston rings. Carefully selected ductile iron or stainless steel alloys provide excellent wear resistance and sealing. In addition, chrome, phosphate, and nitride coatings increase the strength and durability of the rings, adapting them to the specific requirements of a given engine. ### Compression Rings Compression rings, made of ductile cast iron or stainless steel, guarantee the tightness of the combustion chamber, minimizing power losses and ensuring optimal combustion of the mixture. Special coatings (chrome, nitride, phosphate) further enhance their wear resistance. ### Oil Rings The oil ring set consists of three elements: two scraper rings made of ductile cast iron or stainless steel, and one expander ring made of stainless steel. They ensure precise oil metering, protecting the cylinder from excessive wear and maintaining optimal operating conditions. ### Namura Brand - Synonym for Quality Namura is a renowned manufacturer of motorcycle and scooter parts, known for the high quality of its products. By choosing Namura NA-40011-2R piston rings, you are investing in the reliability and longevity of your engine.