SKU: MAH4155MS-112
MPN: 4155MS-112
The MAHLE PISTONS Piston Ring Set 4.155 Bore 1.0 1.0 2.0mm (Part Number 4155MS-112) is a precision-engineered performance series ring set designed for high-performance and racing applications. This file-fit piston ring kit delivers exact bore compatibility and controlled compression, making it the choice for builders who demand precision fitment. It is particularly suited for larger-displacement engine builds typical in performance small-block and big-block platforms.
Constructed from plasma-moly coated steel, this ring set features a 1.0mm top ring, 1.0mm second ring, and 2.0mm oil ring thickness configuration with standard tension characteristics. The plasma moly coating provides superior wear resistance and reduces friction during break-in and sustained operation. File fit rings require hand-fitting to each piston, ensuring optimal gap clearance and preventing blowby while maximizing seal integrity.
Engine builders, performance technicians, and serious enthusiasts rebuilding high-output naturally aspirated or forced-induction engines will benefit most from this ring set. The standard tension profile balances blowby control with cylinder wall wear management, critical for long-term durability in race engines and street performance builds. MAHLE's precision manufacturing ensures consistent ring geometry and coating quality, reducing variables during engine assembly.
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