JE Pistons Ring Sets .0.0394in Top Ring / 0.0472 2nd Ring / 0.110 Oil Ring / 3.937in Bore

When you're rebuilding the top end of your engine, getting the right piston rings is crucial for sealing combustion pressure and making sure everything runs smoothly. These JE Pistons ring sets are built for that job, offering a well-made solution to ensure your pistons seal tightly against the cylinder walls. They're designed to help maximize horsepower by keeping that combustion pressure where it belongs, inside the cylinder.

This particular set features a 0.0394-inch thick carbon steel nitride top ring, a 0.0472-inch ductile iron phosphate second ring, and a 0.1102-inch low-tension carbon steel nitride oil ring, all for a 3.937-inch bore. The carbon steel nitride rings are known for their durability and ability to maintain a good seal, while the ductile iron phosphate second ring helps with oil control and blow-by prevention. These are file-fit rings, meaning you'll need to gap them yourself to match your specific engine build, which is common practice for performance builds where precise tolerances are key.

JE Pistons offers these rings in a wide variety of sizes and thicknesses to fit many different engines, and they even provide custom services used by top racing teams. While these are not CARB approved and cannot be shipped to California, they represent a solid option for engine builders looking for reliable performance and improved sealing.