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Upgrade your engine's performance with the HASTINGS Piston Rings designed specifically for 3.750-inch standard bores in 88-inch Twin Cam engines. This comprehensive set includes top compression rings, second compression rings, and oil control rings, all engineered to optimize combustion efficiency and oil management. The top compression rings feature a barrel face that enhances heat transfer between the piston and cylinder wall, helping to maintain optimal operating temperatures and improve engine longevity. These rings also effectively control combustion chamber gases, ensuring the energy from expanding gases is efficiently transferred to the crankshaft for smooth power delivery. The second compression rings are Napier style with a reverse twist and a taper-machined face, which mimics the scraping edge of a positive twist torsional ring. This design promotes side sealing, preventing oil from being forced under or behind the ring, resulting in improved oil economy and cleaner engine operation. The oil control rings are a three-piece Flex Vent design, allowing for better conformability to the bore with a small cross-sectional area. The three-piece construction ensures uniform pressure distribution through four steel rails and two expanders, providing effective oil control and reducing oil consumption. Manufactured in the USA, this set includes enough rings for two pistons, with two rings per groove—except for the rails, which are paired with two rail rings per one expander ring. These high-quality Hastings piston rings are essential for restoring engine compression, enhancing fuel efficiency, and ensuring reliable performance in high-demand applications.
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