JE Pistons Ring Sets .043-.043-3mm-105.918 RINGS

Starting with a .043 inch plasma moly top ring and a .1181 inch carbon steel chrome low tension oil ring, this JE Pistons ring set is built for serious engine work. These rings are designed to create a precise seal for combustion pressure, which is key to maximizing horsepower. They are offered in a wide selection of sizes and materials to fit many different engines, and JE Pistons even offers custom services like back cutting and PVD coating, used by top racing teams, to further improve durability and reduce friction.

This particular set is a file-fit style, meaning you'll need to gap the rings yourself to perfectly match your cylinder bore. This is a common practice for performance builds where precise control over ring seal is critical. The combination of carbon steel plasma moly for the top ring and ductile iron phosphate for the second ring, along with the chrome oil ring, offers a well-built setup for demanding applications.

Because these are file-fit rings, they are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper gapping and fitting procedures.