JE Pistons JC8385 Pro Seal Piston Ring Set File Fit

The JE Pistons JC8385 is a Pro Seal piston ring set engineered for high-performance and racing engine applications. Part of JE's industry-leading Pro Seal ring program, this set delivers precision combustion sealing to maximize horsepower and minimize blow-by across street/strip and all-out competition builds.

Key Features:

• Barrel-faced top rings made from premium ductile iron with a plasma-moly inlay combining molybdenum, nickel, chrome, and trace elements for higher temperature resistance and reduced wear
• Taper-faced second rings with a reverse-torsional design and phosphate coating for improved oil control and sealing
• Low-tension oil control ring constructed from carbon steel with a chrome face, reducing friction while maintaining effective oil regulation
• File-fit design allows professional engine builders to precisely gap rings to the exact operating conditions of the application
• Available in a wide selection of bore sizes, material types, and thicknesses to suit a broad range of engine configurations
• Custom ring services available from JE including back cutting, dyke cutting, lapping, grinding, and PVD coating

JE Pro Seal rings are trusted by top teams in NASCAR, NHRA Pro Stock, ALMS, and AMA competition. Sold as a matched set, these rings are designed to complement JE's world-class forged piston lineup and deliver measurable gains in ring seal, durability, and power output.