MAHLE 4150MS Piston Ring Set Bore File Fit - 4.145 1/16 1/16 3/16

The MAHLE 4150MS is a high-performance piston ring set engineered for 4.145" bore engines with a +.005" oversize tolerance. This file-fit ring set features a proven 1/16", 1/16", 3/16" configuration with standard tension design, ideal for street performance and racing applications.

Ring Configuration:

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

Key Features:

• Ultra-flat ring flanks maximize ring-to-piston sealing efficiency
• Advanced friction reduction technology delivers measurable horsepower gains
• File-fit design allows precise end gap customization for your specific application
• Developed using piston ring simulation and computer modeling for optimized performance
• Standard tension configuration balances sealing performance with minimal friction

MAHLE's engineering expertise ensures these rings provide reliable sealing, reduced blow-by, and improved engine efficiency. The plasma moly top ring coating offers exceptional durability and scuff resistance during break-in and high-load operation.