MAHLE 3011042B Gas Nitride Steel Performance Piston Ring Set Bore - 4.610

The MAHLE 3011042B is a high-performance plain piston ring set engineered for serious performance applications requiring maximum durability and strength. This ring set features a gas nitrided steel top compression ring designed for 4.610-inch bore engines, delivering exceptional resistance to wear, detonation, and high-temperature operating conditions.

Key Features:

• Gas nitride steel top compression ring for superior strength and detonation resistance
• 4.610-inch bore diameter with 0.043-inch (1.09mm) compression ring thickness
• 0.170-inch radial wall thickness for reduced tension and friction
• Barrel-faced design for optimal sealing and quick break-in
• Compatible with cast iron, Nikasil, and other modern cylinder bore materials
• Lower mass design reduces inertial forces at TDC and BDC for improved sealing
• Plain ring configuration without gas ports

Technical Specifications:

• Bore Size: 4.610 inches
• Top Ring Thickness: 0.043 inches
• Radial Wall: 0.170 inches
• Material: Gas Nitride Steel (top ring)
• Ring Type: Plain (non-ported)

Gas nitriding is a heat treatment process that creates an extremely hard, wear-resistant surface while maintaining the ductility and strength of the steel core. This makes the ring highly resistant to scuffing, wear, and breakage under extreme performance conditions including forced induction, nitrous oxide, and high-RPM applications. The reduced radial wall thickness allows for lower ring tension, which minimizes friction losses while maintaining excellent cylinder seal.

MAHLE is a world-leading manufacturer of pistons and piston rings, supplying over 60% of current production engines in North America. Their performance ring sets are developed using advanced computer simulation and testing to maximize horsepower through reduced friction while maintaining superior sealing characteristics. This ring set is ideal for high-performance street engines, drag racing, road racing, and other demanding applications where reliability and power are critical.