MAHLE 4190MS Piston Ring Set Bore File Fit - 4.185 1/16 1/16 3/16

The MAHLE 4190MS is a premium three-piece piston ring set engineered for 4.185" bore engines with a +.005" oversize tolerance. This file-fit ring set features standard tension design with 1/16", 1/16", 3/16" ring widths, providing optimal sealing and performance for high-performance and racing applications.

Ring Configuration:

• Top Ring: Ductile iron construction with plasma moly coating and barrel face profile for superior wear resistance and oil control
• Second Ring: Cast iron reverse twist design that enhances cylinder wall sealing during combustion
• Oil Ring: 3-piece standard tension configuration for effective lubrication management

Key Features:

• File-fit design allows precise end-gap customization for your specific application
• Ultra-flat ring flanks maximize ring-to-piston groove sealing and reduce blow-by
• Advanced piston ring simulation and computer development minimize friction for measurable horsepower gains
• Standard tension oil rings balance sealing performance with reduced drag
• 4.185" bore diameter with .005" oversize tolerance

MAHLE's precision engineering and advanced coating technologies deliver reliable performance on the street, dyno, and track. The plasma moly top ring provides exceptional durability under high heat and pressure conditions, while the reverse twist second ring actively scrapes oil and maintains proper cylinder sealing throughout the power stroke.