## Namura NA-40005-1R Piston Rings 83.25mm - Reliability and High Performance Namura 83.25mm NA-40005-1R piston rings are a key element for optimal engine performance. Often overlooked, these rings have a huge impact on efficiency, durability, and combustion efficiency. Namura, a renowned manufacturer of motorcycle and scooter parts, ensures the highest quality and precision. ### Advanced Materials and Technologies Namura uses advanced materials and technologies to ensure excellent sealing and wear resistance. The type of cylinder sleeve, sleeve coating, engine size, and piston stroke (2 or 4 stroke) - all these factors are taken into account when designing the rings to ensure a perfect fit and optimal operation under all conditions. ### Compression Rings Made of highly ductile cast iron or stainless steel alloy, the compression rings guarantee excellent sealing and wear resistance. Additional chrome, phosphate, and nitride coatings increase their durability and ensure long-lasting, trouble-free operation. ### Oil Rings Oil rings consist of three components: two scraper rails made of highly ductile cast iron or stainless steel alloy (also with chrome, nitride, or phosphate coating) and one expander ring made of stainless steel. This design ensures optimal lubrication and minimizes oil consumption. ### Specifications: * Piston Diameter: 83.25mm * Brand: Namura Namura NA-40005-1R piston rings guarantee reliability and high performance for your motorcycle or scooter engine.