## Namura NX-30050R Piston Rings 40.96mm - Reliability and Performance Namura NX-30050R piston rings with a diameter of 40.96mm are a key element for optimal engine performance. Often overlooked, these rings have a huge impact on efficiency, durability, and combustion effectiveness. Namura, known for high-quality motorcycle and scooter parts, designs its rings for specific applications, taking into account the type of cylinder liner, its coating, engine size, and stroke type (2 or 4). ### Advanced Materials and Technologies The choice of materials for the production of piston rings is crucial for their performance. Namura uses highly ductile cast iron or stainless steel alloy, both characterized by excellent wear resistance and providing a tight seal. In addition, depending on the model, chrome, phosphate, and nitride coatings are used to meet the requirements of a specific engine. ### Compression Rings Compression rings, made of highly ductile cast iron or stainless steel alloy, guarantee the tightness of the combustion chamber and minimize compression losses. Chrome, phosphate, or nitride coatings further enhance their durability and wear resistance. ### Oil Control Rings Oil control rings consist of three elements: two scraper rings 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 control rings is precise oil metering, ensuring optimal cylinder lubrication and minimizing oil consumption. By choosing Namura NX-30050R piston rings, you are investing in the reliability and longevity of your engine.