## Namura NA-40000-2R Piston Rings 64.45mm - Reliability and Performance Often overlooked, piston rings play a crucial role in engine performance, durability, and efficiency. The Namura NA-40000-2R piston rings with a diameter of 64.45mm guarantee the highest quality and precision. Namura is known for its attention to detail and the use of innovative technologies, resulting in excellent engine performance. ### Advanced Materials and Technologies The materials used in the production of Namura piston rings are one of the most important factors influencing their performance. The type of cylinder sleeve, its coating, the engine size, and the stroke (2 or 4 stroke) - all these factors are taken into account when designing the rings to ensure a perfect fit for the operating conditions. ### Compression Rings Made of highly ductile cast iron or stainless steel alloy, the compression rings are characterized by excellent wear resistance and provide a tight seal. Additional chrome, phosphate, or nitride coatings increase their durability and corrosion resistance. ### Oil Control Rings The oil control rings consist of three separate components: two scraper rails made of highly ductile cast iron or stainless steel alloy, coated with chrome, nitride, or phosphate, and one stainless steel expander ring. This solution guarantees efficient oil scraping and prevents its burning in the combustion chamber. ### Benefits of using Namura NA-40000-2R rings: * Increased engine performance * Improved compression * Reduced oil consumption * Extended engine life * Perfect fit to the cylinder sleeve