JE Pistons Ring Sets 1.5-1.5-4mm-3.307

When you're rebuilding the top end of your engine, getting the piston rings seated just right is critical for sealing combustion pressure and making good power. These JE Pistons ring sets are built for that job, offering a file-fit design that lets you tailor the end gap to your specific cylinder bore and application. This means you can achieve a really precise seal, which is key to maximizing horsepower and ensuring the engine runs efficiently.

This particular set features a 0.0591 inch ductile iron plasma moly top ring, a 0.0591 inch iron phosphate second ring, and a 0.1575 inch carbon steel chrome oil ring. The file-fit nature means you'll need to carefully file the ends of the rings to achieve the correct gap for your engine's bore size, a common practice for performance builds where exact tolerances matter. JE Pistons uses the same techniques for these rings that top racing teams rely on, aiming for reduced friction and improved durability.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitting and installation procedures to get the best performance from your engine build.