Engine Piston Ring Set | MAH4015MS-112

The MAHLE 4015MS-112 is a professional-grade Performance Piston Ring Set designed for high-horsepower engine builds, specifically for those with a 4.010-inch bore (often .010 over for engines like the Chevy 350 or LS series).

The MAHLE 4015MS-112 Piston Ring Set is part of MAHLE's Motorsports series, engineered to reduce friction and improve engine efficiency. This set features an ultra-thin 1.0mm, 1.0mm, 2.0mm ring pack. The "112" suffix indicates that these are file-fit rings, allowing engine builders to precisely set the ring end gap for specific performance needs, such as forced induction or nitrous applications.

• Reduced Friction: The thin 1.0mm top and second rings minimize "drag" against the cylinder walls, which can unlock additional horsepower on the dyno and track.
• High-Strength Materials: The top rings are made of ductile iron with a plasma-moly inlay, while the second rings use a reverse-twist tapered face for superior oil control.
• HV385 Coating: Features a patented supersonic thermal-spray process on the top ring for increased scuff resistance and durability under extreme heat.
• Precision Sealing: MAHLE's ultra-flat ring flanks maximize the seal between the ring and the piston groove, preventing blow-by and maintaining compression