Single Cyl Piston Ring Set 4.315 1.5 15 3.0mm

The Single Cyl Piston Ring Set 4.315 1.5 15 3.0mm by MAHLE PISTONS is a precision-engineered component specifically designed for single-cylinder high-performance and modified engine builds. This piston ring set is ideal for builders and mechanics working with larger displacement engines requiring custom ring specifications. Whether you're rebuilding a stroker engine or upgrading to oversized pistons, this MAHLE ring set provides the compression sealing and durability that serious enthusiasts demand.

The 4.315-inch bore diameter accommodates engines with substantial displacement increases, while the ring stack configuration—featuring 1.5mm compression rings and 3.0mm oil control rings—ensures optimal compression, minimal blowby, and controlled oil consumption across the full RPM band. MAHLE's reputation for precision manufacturing means these rings maintain tight tolerances and consistent gap clearance, critical factors in preventing ring flutter and maintaining sustained boost pressure in turbocharged or supercharged applications.

This ring set is particularly beneficial for engine builders and performance tuners focused on single-cylinder applications. Installation requires precise ring end-gap and side-clearance setup—measure carefully and file gaps to OEM specifications for optimal performance. With a lightweight design that reduces reciprocating mass, this piston ring set improves throttle response and reduces parasitic loss in modified powerplants.