MAHLE 3021254 Performance Piston Ring Set Bore Steel Napier - 4.085

The MAHLE 3021254 is a high-performance piston ring set engineered for precision engine building and racing applications. This premium ring set features steel Napier compression rings designed for durability and superior sealing in demanding conditions.

Specifications:

• Bore Size: 4.085 inches
• Top Ring: .043 inch (1.09mm) width
• Second Ring: .043 inch (1.09mm) width, steel Napier design
• Oil Ring: .135 inch (3.43mm) width, standard tension
• Ring Style: Plain (no coating), RW (reverse twist) design
• Construction: Performance-grade steel for high-temperature stability

Key Features:

• Steel Napier second ring provides excellent oil control and compression sealing
• Precision-manufactured to MAHLE's strict tolerances for optimal ring seal
• Plain face design suitable for standard cylinder wall finishes
• Reverse twist (RW) design promotes proper ring seating and oil management
• Engineered for performance and racing engine applications

MAHLE is a globally recognized leader in engine components, trusted by professional engine builders and racers worldwide. This ring set delivers the quality and performance demanded in high-output engine builds.