JE Pistons Ring Sets 99.5 79 130.5 30.7 57.0 8.5:1 -16.5 407 TF

If you're rebuilding the top end of your 4-cylinder engine, getting the right piston rings is crucial for sealing combustion pressure and maximizing horsepower. These file-fit rings from JE Pistons are designed for that job. They come in a set with specific dimensions and materials chosen to work well together.

This particular set features a 0.0472-inch carbon steel nitride top ring, which helps create a solid seal. Below that is a 0.0472-inch iron phosphate second ring, and for oil control, a 0.0984-inch carbon steel chrome low-tension oil ring. Because they are file-fit, you'll need to gap them yourself to precisely match your cylinder bore, a common practice for performance builds to ensure optimal sealing and reduce the risk of blow-by.

JE Pistons is known for working with top racing teams, and the same attention to detail goes into these rings. While they offer custom services for extreme applications, this set is a well-built option for many engine rebuilds. Keep in mind these are not CARB approved and cannot be shipped to California.