JE Pistons Ring Sets 1.2-1.5-3mm-MOLY

JE Pistons Ring Sets are built to help your engine make the most power by ensuring a tight seal in the combustion chamber. This particular set, part number J75008-4050-5, is designed for 8-cylinder engines and features a file-fit design, meaning you can fine-tune the end gap for your specific application. This is a common practice when rebuilding performance engines to achieve optimal sealing and prevent blow-by.

The construction here is solid, with a 0.0472-inch carbon steel plasma moly top ring known for its durability and reduced friction. Beneath that is a 0.0591-inch iron phosphate second ring, and the oil control is handled by a 0.1181-inch carbon steel chrome low-tension oil ring. These materials and thicknesses are chosen to work together for improved ring seal and reduced internal friction, which translates to more usable horsepower. The file-fit nature means you'll need to measure and file the ring end gaps to match your cylinder bore dimensions precisely.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. If you're looking to rebuild your engine for improved performance and durability, this set from JE Pistons is a well-known option used by many racing teams.