MAHLE 4130ML-043 Piston Ring Set Bore File Fit Low Tension - 4.125

The MAHLE 4130ML-043 is a high-performance piston ring set designed for 4.125" bore (+.005" oversize) applications. This file-fit ring set features an ultra-low friction configuration with 1.0mm (.043"), 1.0mm (.043"), and 3.0mm widths, engineered to deliver free horsepower by minimizing friction and maximizing ring-to-piston sealing.

Ring Configuration:

• Top Ring: Ductile iron with plasma moly coating and barrel face design for superior sealing and wear resistance
• Second Ring: Cast iron reverse twist configuration for optimal oil control
• Oil Ring: 3-piece low tension design for reduced friction
• Ultra-flat ring flanks maximize sealing efficiency

Specifications:

• Bore Size: 4.125" (+.005" oversize capability)
• Ring Widths: .043" / .043" / 3.0mm (1.0mm / 1.0mm / 3.0mm)
• Style: File-fit for precise end gap adjustment
• Tension: Low tension for reduced friction

MAHLE pioneered the use of piston ring simulation and computer development tools to create rings that provide measurable performance gains on the dyno and track. This file-fit design allows engine builders to custom-gap the rings for optimal performance in high-performance and racing applications.