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Bore 4.030", Top 1/16", 2nd 1/16", 3rd 3/16"
Keith Black OE-quality piston rings are made from ductile iron, and compression rings are available with moly, chrome, and plasma-moly facings for extra durability. They'll seal mild to high-compression engines, help protect against oil blowby, and feature standard ring end gaps for an easy installation.
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Tyler, Texas 75706
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