## Complete Piston 69.97mm Namura NX-40022 - Reliability and Performance Often overlooked, pistons play a crucial role in engine performance, durability, and overall efficiency. The complete piston 69.97mm Namura NX-40022 guarantees quality and precision, backed by the renowned Namura brand. Designed for optimal performance, this piston will meet the expectations of even the most demanding users. ### Highest Quality Materials The materials used in the manufacturing of piston rings are fundamental to their performance. Namura uses only the highest quality components, specifically selected for the intended application. The type of cylinder sleeve, its coating, engine size, and stroke (2 or 4 stroke) all influence the selection of the appropriate ring composition, perfectly matched to the operating conditions. ### Compression Rings Made of highly ductile cast iron or stainless steel alloy, the compression rings offer excellent wear resistance and provide a tight seal. Chrome, phosphate, and nitride coatings further enhance their durability and corrosion resistance. ### Oil Control Rings 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 a single expander ring made of stainless steel. Their purpose is to effectively scrape excess oil, preventing it from entering the combustion chamber and ensuring optimal lubrication. ### Technical Parameters * Piston Diameter: 69.97mm By choosing the Namura NX-40022 complete piston, you are investing in the reliability and longevity of your engine.