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Designed for 1200 cc Big Twin engines, the HASTINGS Piston Rings set (Part #6482020) includes top compression rings, second compression rings, and oil control rings, providing comprehensive sealing and performance. The top compression rings feature a barrel face with a cast coating, which effectively facilitates heat transfer between the piston and cylinder wall, helping maintain optimal engine temperature and efficiency. These rings also control combustion gases, ensuring efficient energy transfer from expanding gases to the crankshaft for smooth power delivery. The second compression rings are reverse torsional taper face rings that enhance side sealing, preventing oil from leaking under and behind the rings, which contributes to improved oil economy and engine cleanliness. Their reverse twist design and taper-machined face replicate the scraping edge of positive twist torsional rings, further optimizing sealing performance. The oil control rings are three-piece flex vent types with a small cross-sectional area for better bore conformability, ensuring consistent oil regulation. The steel rails and expanders work together to provide uniform pressure, guaranteeing effective oil control and reducing oil consumption. Made in the USA, this set includes enough rings for two pistons, with two rings per groove, except for the rails which include two rail rings per one expander ring. This piston ring set is engineered to meet the demanding requirements of high-performance Big Twin engines, offering durability, efficient sealing, and heat management for reliable operation. Whether rebuilding or maintaining your engine, these rings are a reliable choice for optimal performance and longevity.
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