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Upgrade your engine's performance with the HASTINGS 2C523113 piston ring set designed specifically for 107-inch motors. This comprehensive set includes top compression rings, second compression rings, and oil control rings, ensuring optimal sealing and efficient operation. The top compression rings feature a barrel face coated using the advanced Physical Vapor Deposition (PVD) process, which enhances heat transfer between the piston and cylinder wall, helping to maintain proper operating temperatures and prevent overheating. These rings effectively control combustion chamber gases, transferring the energy from expanding gases to the crankshaft for improved power output and efficiency. The second compression rings are Napier style with a reverse twist and taper-machined ring face, which mimic the bottom scraping edge of a positive twist torsional ring. This design promotes side sealing, reducing oil consumption by preventing oil from being forced under or behind the ring, leading to better oil economy and cleaner combustion. The oil control rings are a three-piece Flex Vent design, featuring a small cross-sectional area that conforms well to the bore surface for consistent oil regulation. The four steel rails and two expanders work together to provide uniform pressure, ensuring reliable oil control and minimizing oil consumption. Made in the USA, these rings are engineered for durability and long-lasting performance. The set includes enough rings for two pistons, with two rings per groove—except for the rails, which are paired with one expander ring. This piston ring set is compatible with 3.937-inch bore diameters, with a +.005-inch oversize for precise fitting and optimal engine performance. Whether rebuilding or upgrading your engine, the HASTINGS piston rings offer quality construction, innovative design features, and dependable performance to keep your engine running smoothly and efficiently.
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