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Upgrade your engine's performance with the HASTINGS piston rings designed specifically for Twin Cam 88 models with a 3.750-inch bore and a 0.010-inch ring gap. This comprehensive set includes top compression rings, second compression rings, and oil control rings, providing all the essential components for optimal piston operation. The top compression rings feature a barrel face design that enhances heat transfer between the piston and cylinder wall, improving cooling efficiency and preventing overheating during high-performance riding. They also control combustion gases effectively, ensuring maximum energy transfer from expanding gases to the crankshaft for smooth power delivery. The second compression rings are Napier style with a reverse twist and taper-machined face, which promotes side sealing to prevent oil from passing under the rings, resulting in improved oil economy and reduced emissions. The oil control rings are a three-piece flex vent design that offers excellent conformability to the cylinder bore. Their small cross-sectional rails combined with four steel rails and two expanders provide consistent pressure, ensuring effective oil regulation while minimizing oil consumption. Made in the USA, these rings are engineered for durability and precision. The set includes enough rings for two pistons, with two rings per groove except for the rails, which are paired with one expander ring. Installation of these rings will help restore engine compression, improve lubrication, and enhance overall engine longevity, making them an ideal choice for performance upgrades or rebuilds. Whether you're rebuilding your Twin Cam 88 or performing routine maintenance, these Hastings piston rings deliver reliable, high-quality performance to keep your motorcycle running smoothly and efficiently.
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