MAHLE 4160MS Piston Ring Set Bore File Fit - 4.155 1/16 1/16 3/16

The MAHLE 4160MS piston ring set is engineered for 4.155" bore applications with a +.005" oversize tolerance and file-fit design for precise end gap adjustment. This standard tension ring set features MAHLE's advanced friction-reduction technology, developed through computer simulation to deliver measurable horsepower gains on the dyno and track.

Ring Configuration (1/16", 1/16", 3/16"):

• Top Ring: Ductile iron construction with plasma moly facing and barrel face profile for superior wear resistance and oil control
• Second Ring: Cast iron reverse twist design for optimal sealing and oil management
• Oil Ring: 3-piece standard tension configuration for consistent oil control across the cylinder wall

Key Features:

• Ultra-flat ring flanks maximize ring-to-piston groove sealing
• File-fit ends allow precise end gap customization during installation
• Plasma moly top ring coating provides exceptional durability in high-performance applications
• Standard tension design balances sealing performance with reduced friction
• Engineered for 4.155" +.005" bore diameter

MAHLE's proprietary ring design minimizes friction losses while maintaining excellent cylinder sealing, making this ring set ideal for performance rebuilds and racing applications where every horsepower matters.