## Namura NA-50011-2R Piston Rings 97.07mm - Reliability and Performance for Your Engine Namura NA-50011-2R piston rings with a diameter of 97.07mm are a key element in ensuring optimal performance, efficiency, and longevity of your engine. Often overlooked, piston rings play a fundamental role in sealing the combustion chamber and controlling oil consumption. Namura, a renowned manufacturer of motorcycle and scooter parts, delivers a top-quality product designed to meet the specific requirements of your vehicle. ### Advanced Materials and Technologies Namura NA-50011-2R utilizes carefully selected materials, such as highly ductile cast iron or stainless steel alloy, providing excellent wear resistance and sealing. Additional chrome, phosphate, and nitride coatings enhance durability and performance in diverse operating conditions. The type of cylinder sleeve, sleeve coating, engine size, and piston stroke – all these factors have been considered in the design process to ensure a perfect fit and optimal operation. ### Compression Rings Compression rings, made of highly ductile cast iron or stainless steel alloy, ensure the tightness of the combustion chamber, minimizing power loss and increasing engine efficiency. Chrome, phosphate, or nitride coatings further enhance their wear resistance. ### Oil Rings The oil ring set consists of three components: two scraper rings made of highly ductile cast iron or stainless steel alloy with chrome, nitride, or phosphate coating, and one expander ring made of stainless steel. This design effectively controls oil consumption, preventing it from entering the combustion chamber and ensuring long engine life. By choosing Namura NA-50011-2R piston rings, you invest in the reliability and performance of your motorcycle or scooter.