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Upgrade your engine's performance with the HASTINGS piston rings designed specifically for 1200 cc Big Twin motorcycles. This set includes top compression rings, second compression rings, and oil control rings, all engineered to optimize combustion efficiency and engine longevity. The top compression rings feature a barrel face with a cast coating, which enhances heat transfer from the piston to the cylinder wall, aiding in effective cooling and preventing overheating. These rings also help control combustion chamber gases, enabling efficient energy transfer from expanding gases to the crankshaft for smooth power delivery. The second compression rings are designed with a reverse torsional taper face, promoting side sealing that reduces oil consumption by preventing oil from being forced under and behind the ring. This design, combined with a taper-machined ring face, mimics the scraping edge of positive twist torsional rings, improving sealing and engine performance. The oil control rings are of a three-piece flex vent design, allowing for a smaller cross-sectional area that conforms better to the bore. They provide uniform pressure through four steel rails and two expanders, ensuring reliable oil control and reducing oil blow-by. Made in the USA, this piston ring set is comprehensive, including enough rings for two pistons, with two rings per groove and two rail rings per one expander ring. This product is ideal for enthusiasts seeking to restore or enhance their Big Twin engine's efficiency and durability, ensuring a proper fit and high-quality performance. Whether rebuilding an existing engine or assembling a new one, these Hastings rings deliver dependable sealing, efficient heat transfer, and optimal oil control for extended engine life.
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