MICHIGAN 77 315-0005.005 Plasma Moly Piston Ring Set 4.000" Bore 8-Cylinder

The MICHIGAN 77 315-0005.005 piston ring set is engineered for high-performance street and racing applications requiring precise bore dimensions and reliable sealing. This complete 8-cylinder kit features advanced plasma moly coating technology designed to provide superior durability and rapid break-in characteristics.

Key Features:

• 4.000 inch bore diameter for exact fitment in performance rebuilds
• File-fit design allows custom gap adjustment for optimal ring end clearance
• Plasma moly coating on ring faces for enhanced wear resistance and oil retention
• Low tension design reduces friction and frees up horsepower
• Ring thickness: 1/16" top ring, 1/16" second ring, 3/16" oil ring
• Complete kit includes rings for all 8 cylinders

Plasma moly technology uses a spray process to apply molybdenum coating to the ring surface, creating a durable finish that seats quickly and resists detonation damage. The low tension configuration minimizes friction losses while maintaining excellent cylinder sealing. File-fit rings require proper gapping with a ring file tool during installation to achieve manufacturer-specified end gaps for your specific application.