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Upgrade your engine's performance with the HASTINGS piston rings designed specifically for 1200 cc Big Twin motorcycles. These high-quality rings include top compression rings, second compression rings, and oil control rings, ensuring comprehensive sealing and efficient operation. The top compression rings feature a barrel face with cast coating, which facilitates effective heat transfer between the piston and cylinder wall, helping maintain optimal operating temperatures and preventing overheating. They also control combustion gases, allowing the piston to transfer the energy from expanding gases to the crankshaft efficiently. The second compression rings are reverse torsional taper face rings that promote side sealing, preventing oil from being forced under and behind the rings, which improves oil economy and reduces oil consumption. Their reverse twist design, combined with a taper-machined face, mimics the scraping edge of a positive twist torsional ring for enhanced sealing performance. The oil control rings are a three-piece flex vent design, allowing the rails to be manufactured with a small cross-sectional area for better conformability to the bore. This design ensures uniform pressure through four steel rails and two expanders, providing superior oil control and reducing oil blow-by. Made in the USA, these rings come with enough material for two pistons—two rings per groove, with the rails and expanders arranged to maximize sealing efficiency. Whether you're rebuilding or enhancing your motorcycle engine, these piston rings offer durability, precision, and improved engine performance, making them an excellent choice for demanding riders and mechanics alike.
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