## Namura NA-50001-4R Piston Rings 80.95mm - Reliability and Performance for Your Engine Often overlooked, piston rings play a crucial role in engine performance and longevity. The Namura NA-50001-4R piston rings, with a diameter of 80.95mm, guarantee the highest quality and precision, ensuring optimal operation of your motorcycle or scooter. ### Advanced Materials and Technologies Namura is renowned for its attention to detail and the use of innovative technologies. The NA-50001-4R piston rings are designed for specific applications, taking into account the type of cylinder sleeve, its coating, engine size, and piston stroke. This ensures a perfect fit for operating conditions, providing excellent sealing and minimal wear. ### Compression Rings Made of highly ductile cast iron or stainless steel alloy, the compression rings are characterized by exceptional wear resistance. Additional chrome, phosphate, or nitride coatings enhance their durability and effectiveness in ensuring a tight seal. ### Oil Rings The oil ring set consists of three components: two scraper rails made of ductile cast iron or stainless steel with a chrome, nitride, or phosphate coating, and a single expander ring made of stainless steel. This design guarantees effective lubrication and removal of excess oil, resulting in a longer engine life. By choosing Namura NA-50001-4R piston rings, you are investing in the reliability and optimal performance of your vehicle.