## Piston Rings 56.70mm Namura NX-40010-3R - Reliability and Performance The Namura NX-40010-3R piston rings with a diameter of 56.70mm are a key element for ensuring optimal engine performance, efficiency, and durability. Often overlooked, these rings play a vital role in sealing the combustion chamber and controlling oil consumption. Namura, known for its high-quality motorcycle parts, has designed these rings for the specific requirements of engines, taking into account the type of cylinder liner, its coating, engine size, and stroke type (2 or 4). ### Advanced Materials and Technologies Namura utilizes advanced materials and technologies to ensure excellent wear resistance and sealing performance. Both compression and oil rings are made of highly ductile cast iron or stainless steel alloy, characterized by exceptional durability. In addition, depending on the model, chrome, phosphate, and nitride coatings are used to meet the demands of specific applications. ### Compression Rings - Excellent Sealing Namura NX-40010-3R compression rings provide excellent combustion chamber sealing, minimizing pressure loss and maximizing engine performance. Their precise manufacturing and material selection guarantee long-lasting and reliable operation. ### Oil Rings - Oil Consumption Control Oil rings consist of three components: two scraper rails made of highly ductile cast iron or stainless steel alloy, and one expander ring made of stainless steel. The use of chrome, nitride, or phosphate coatings further enhances their effectiveness in controlling oil consumption, resulting in longer engine life and lower operating costs. By choosing Namura NX-40010-3R piston rings, you invest in quality and reliability, providing your engine with optimal operating conditions.