MAHLE 4125MS 4.125" Piston Ring Set 1/16 1/16 3/16 Standard Tension

The MAHLE 4125MS is a premium piston ring set engineered for 4.125" bore applications. This drop-in standard tension ring set features a 1/16", 1/16", 3/16" configuration designed to deliver optimal sealing and performance in high-performance and racing engines.

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 to enhance sealing and prevent blow-by
• Oil Ring: 3-piece standard tension configuration for effective oil management

Key Features:

• 4.125" bore diameter with drop-in fitment
• Standard tension design balances sealing performance with minimal friction
• Ultra-flat ring flanks maximize ring-to-piston sealing contact
• Advanced plasma moly coating reduces friction and increases durability
• Engineered using piston ring simulation and computer development tools

MAHLE's precision manufacturing process ensures consistent quality and performance. The plasma moly top ring provides exceptional resistance to scuffing during break-in while the reverse twist second ring enhances cylinder pressure sealing. This ring set is ideal for performance rebuilds, racing applications, and high-output engines requiring reliable sealing and reduced friction losses.