JE Pistons Ring Sets 1/16-1/16-3/16 RING

JE Pistons is well-known for making high-performance engine components, and their piston ring sets are no exception. This particular set, part number J100F8-4390-5, is designed for 8-cylinder engines and features a file-fit design, meaning you can precisely tailor the end gap for your specific application. This is crucial for achieving optimal combustion pressure sealing, which directly translates to maximizing horsepower.

This ring set includes a 0.064-inch ductile iron Plasmy Moly top ring, a 0.064-inch iron phosphate second ring, and a 0.188-inch carbon steel chrome standard tension oil ring. The combination of materials and thicknesses is chosen to provide a strong seal and reduce friction. JE Pistons offers custom services, like those used by top racing teams, to further enhance durability and power, and this set benefits from that same level of expertise in its design and material selection.

Because these are file-fit rings, they require careful installation to ensure the correct end gap is achieved. This allows for a custom fit that improves sealing and performance over standard pre-gapped rings. Please note that this part is not CARB approved and cannot be shipped to California.