MAHLE 3932MS-112 Performance Piston Ring Set Bore File Fit - 4.010

The MAHLE 3932MS-112 is a high-performance piston ring set engineered for precision and power. Designed for a 4.010-inch bore diameter with file-fit capability, this ring set features a 1.5mm x 1.5mm x 3.0mm configuration optimized for maximum performance and durability.

Key Features:

• 4.010-inch bore diameter (+0.005 inch file fit capability)
• 1.5mm top ring with positive twist ductile iron construction and plasma-moly inlaid barrel face
• 1.5mm second ring with reverse twist taper faced cast iron design
• 3.0mm standard tension three-piece oil control ring
• Ultra-flat ring flanks for maximum ring-to-piston sealing
• File-fit design allows precise end-gap customization for your specific application
• Advanced plasma-moly coating for superior wear resistance and friction reduction

MAHLE pioneered the use of piston ring simulation and computer development tools to engineer rings that deliver measurable horsepower gains by minimizing friction. The precision finish and ultra-flat ring flanks maximize sealing efficiency, resulting in improved compression and performance that's proven on both the dyno and the track. This single-cylinder ring pack is ideal for custom engine builds, performance rebuilds, and racing applications where precision fitment is critical.