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Upgrade your motorcycle engine with the Hastings Part #6127010 piston ring set designed specifically for 1340 cc Big Twin applications. This comprehensive set includes top compression rings, second compression rings, and oil control rings, providing all necessary components for optimal engine performance. The top compression rings feature a barrel face with cast coating, which enhances heat transfer between the piston and cylinder wall, helping to maintain proper operating temperature and improve durability. These rings are engineered to control combustion chamber gases effectively, ensuring efficient energy transfer from expanding gases to the crankshaft for maximal power output. The second compression rings are reverse torsional taper face rings that promote superior side sealing, reducing oil consumption by preventing oil from being forced under or behind the ring. Their reverse twist and taper-machined face replicate the scraping edge of positive twist torsional rings, contributing to better oil control and engine longevity. The oil control rings consist of a three-piece flex vent design with steel rails and expanders, offering a small cross-sectional profile that conforms well to bore contours. This design ensures uniform pressure distribution, resulting in reliable oil control and minimized oil consumption. Made in the USA, this piston ring set is crafted to meet the high standards demanded by motorcycle enthusiasts and mechanics. It includes enough rings for two pistons, with two rings per groove, except for the rails which are paired with a single expander ring. Whether rebuilding or upgrading, these Hastings piston rings are a reliable choice for maintaining engine efficiency and extending engine life in Big Twin motorcycles.
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