Piston Ring Set 4.000 Classic 1.5 1.5 3.0mm

The Total Seal Piston Ring Set 4.000 Classic 1.5 1.5 3.0mm (SKU TOTCR0684-5) is a precision-engineered ring kit designed for classic race engine builds. This file-fit piston ring set is ideal for competitors running small-block engines at high RPM, ensuring optimal seal integrity and blow-by control.

The classic Total Seal design features ductile iron construction with plasma moly facing, balancing durability against cylinder wall wear while maintaining consistent compression sealing. Each ring in this eight-cylinder kit has a top ring thickness of 1.5mm, a second ring thickness of 1.5mm, and an oil ring thickness of 3.0mm, which is a proven geometry for classic racing applications.

Builders and engine shops select Total Seal rings for competition engines where every tenth of a percent of compression retention translates to measurable power gains. The file-fit design requires honing or finishing to the specific bore diameter, which is essential for achieving optimal ring-to-wall clearance. This piston ring set is compatible with common small-block platforms used in circle-track racing, bracket racing, and vintage engine restoration.