JE Pistons JC8397 Pro Seal Performance Piston Ring Set

The JE Pistons JC8397 is a precision-engineered performance piston ring set from one of motorsport's most trusted names in high-performance engine internals. Part of JE's industry-leading Pro Seal Piston Ring program, this ring set is designed to maximize horsepower through precision sealing of combustion pressure while minimizing friction losses.

JE Pro Seal rings are offered in a wide selection of sizes, materials, and thicknesses to accommodate a broad range of performance and racing engine applications — from street/strip builds to all-out competition engines. Each ring is manufactured using state-of-the-art CNC equipment and purpose-designed tooling, holding tolerances to exacting standards that professional engine builders depend on.

Key Features:

• Part of JE's comprehensive Pro Seal Piston Ring program — the most complete performance ring offering in the industry
• File-fit design allows precise end-gap tuning for your specific application
• Available ring materials include carbon steel nitride, ductile iron plasma moly, and iron phosphate — engineered for reduced friction and improved ring seal
• Custom ring services available including back cutting, dyke cutting, lapping, grinding, and PVD coating
• Manufactured under JE's ISO 9001:2015 certified quality management system
• Finite Element Analysis (FEA) used during design to validate stress and fatigue performance before production
• Trusted by top engine builders competing in NASCAR, NHRA Pro Stock, AMA Supercross, and ALMS

JE Pro Seal piston rings deliver the proven durability, reduced friction, and consistent combustion sealing that professional engine builders rely on at the highest levels of motorsport competition.