Total Seal CR4301-45 Race Piston Rings, 4.125 Bore, 45 Over

The Total Seal Ductile Moly Conventional Gap Ring Set is engineered for performance engine builders seeking reliable sealing, durability, and consistent horsepower. Featuring a ductile iron moly-faced top ring, this ring set is designed to withstand demanding operating conditions while promoting excellent cylinder sealing and long service life. Total Seal utilizes the same advanced piston ring technology trusted by leading builders in professional motorsports, including Cup, NHRA, IRL, IHRA, and Formula 1 competition.

This ring set is configured for a 4.165" + .005" bore size and includes a .043", 1/16", 3/16" ring package with standard oil ring tension for 8-cylinder applications. The conventional gap design provides dependable performance and ease of installation, making it an excellent choice for street, hot rod, and racing engines. The moly-faced top ring helps reduce friction, improve wear characteristics, and support efficient combustion for enhanced overall engine performance.

• Ductile moly top ring construction provides outstanding durability and wear resistance
• Conventional gap design delivers dependable sealing and proven performance
• Designed for 4.165" + .005" bore applications with a .043", 1/16", 3/16" ring configuration
• Standard tension oil ring helps maintain effective oil control while minimizing friction
• Built with race-proven Total Seal technology trusted by professional engine builders worldwide