Piston Ring Set 4.105 Bore 1.0 1.0 2.0mm

The MAHLE PISTONS Piston Ring Set 4.105 Bore 1.0 x 1.0 x 2.0mm is a complete ring kit engineered for high-performance eight-cylinder engine rebuilds and overhauls. This file-fit piston ring set delivers the precision tolerances and thermal stability required for engines operating across demanding duty cycles, from sustained highway performance to heavy-load applications where ring durability directly impacts compression retention and oil control.

The 4.105-inch bore specification pairs with 1.0mm top ring thickness, 1.0mm second ring thickness, and a 2.0mm oil control ring thickness to match OEM bore dimensions while maintaining proper ring gap clearances during honing. Manufactured from ductile iron with HV385 thermal treatment, these rings resist wear and thermal distortion under sustained combustion temperatures. Standard tension characteristics ensure optimal contact pressure against cylinder walls without excessive friction or blow-by, while the ductile iron construction provides the durability required in modern engine environments. File-fit rings require end-gap fitting to the specific cylinder bore, a critical step that ensures proper sealing and prevents ring flutter or breakage during operation.

This piston ring set is the choice for engine builders, machine shops, and powersports enthusiasts performing complete ring replacements on eight-cylinder engines where bore diameter matches 4.105 inches. Proper installation requires precision honing of the cylinder bore to the correct surface finish and accurate end-gap measurement and filing before assembly, ensuring compression sealing and oil control performance throughout the engine's service life.

MAHLE Pistons has long been recognized for precision piston and ring engineering used in original equipment and high-performance rebuilds. This ring set represents the same dimensional accuracy and thermal consistency that professional engine builders depend on when restoring or modifying eight-cylinder powerplants.