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

The 0.064 inch ductile iron Plasmy Moly top ring in this JE Pistons set is built for serious sealing. This specific ring set, part number J100F8-4040-5, is designed to maximize horsepower by precisely sealing combustion pressure within your engine. JE Pistons offers a wide variety of sizes and materials, and this particular set features a 1/16 inch top ring, a 1/16 inch iron phosphate second ring, and a 3/16 inch carbon steel chrome oil ring with standard tension.

These rings are file-fit, meaning you'll need to gap them to your specific cylinder bore during installation, a common practice for performance builds to ensure optimal sealing and prevent piston damage. The materials chosen here — ductile iron with a Plasmy Moly coating for the top ring, iron phosphate for the second, and carbon steel chrome for the oil ring — are selected for durability and reduced friction, which can lead to noticeable gains in power and improved ring seal over time. This is the same type of service used by top racing teams, offering enhanced durability and power.

Keep in mind that this ring set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper gapping and fitting procedures to get the best performance from your engine.