MAHLE 3011165 Performance Gas Nitrided Piston Ring Set Bore - 4.020

The MAHLE 3011165 is a high-performance piston ring set engineered for demanding racing and performance engine applications. This premium ring set features advanced gas nitriding treatment on steel construction, providing exceptional wear resistance and durability under extreme cylinder pressures and temperatures.

Key Specifications:

• Bore Size: 4.020 inches
• Top Ring Width: .043 inches
• Second Ring Width: .043 inches (standard compression ring)
• Oil Ring Width: .157 inches
• Ring Type: RW (Reduced Width) oil ring design
• Material: Gas nitrided steel construction

Performance Features:

• Gas nitriding process creates an ultra-hard surface layer that resists scuffing and wear
• Steel construction provides superior strength compared to cast iron rings
• Reduced width oil ring design minimizes friction while maintaining excellent oil control
• Precision-engineered ring geometry ensures optimal sealing and blowby control
• Ideal for high-RPM and high-boost applications

MAHLE's performance piston rings are trusted by professional engine builders and racers worldwide. The gas nitriding treatment penetrates the steel substrate to create a wear-resistant surface that maintains ring seal throughout the life of the engine, making this ring set an excellent choice for street performance, drag racing, road racing, and other high-performance applications.