## Namura NX-10200-6R Piston Rings 66.97mm - Reliability and Performance Namura NX-10200-6R piston rings with a diameter of 66.97mm are a key element in ensuring optimal performance, efficiency, and engine longevity. Often overlooked, they play a fundamental role in the proper functioning of the piston. Namura, a renowned manufacturer of motorcycle and scooter parts, provides piston rings designed for specific applications, guaranteeing the highest quality and precision. ### Material Selection and Technology The materials used in the production of Namura piston rings are carefully selected to meet the requirements of various cylinder types, cylinder coatings, engine sizes, and strokes (2 or 4). This attention to detail and appropriate material selection ensures a perfect fit and optimal performance under all conditions. ### Compression Rings Namura NX-10200-6R compression rings are made of highly ductile cast iron or stainless steel alloy, guaranteeing excellent wear resistance and a tight seal. Additionally, depending on the application, chrome, phosphate, or nitride coatings enhance durability and sealing effectiveness. ### Oil Rings Oil rings consist of three components: two scraper rings made of highly ductile cast iron or stainless steel, coated with chrome, nitride, or phosphate, and a single expander ring made of stainless steel. This design ensures precise oil metering, minimizing consumption and preventing excess oil from entering the combustion chamber. By choosing Namura NX-10200-6R piston rings, you are investing in the reliability and performance of your engine.