Supertech 91.5mm Bore Piston Rings - 1x3.5 / 1.2x3.80 / 2.8x3.5mm High Performance Gas Nitrided

This set includes the piston rings you need for one cylinder, with specific dimensions of 1x3.5mm for the top ring, 1.2x3.80mm for the second ring, and 2.8x3.5mm for the oil ring. These rings are gas nitrided, a process that hardens the surface and makes them more resistant to wear, which is important for maintaining good compression and oil control over time. They are designed for a 91.5mm bore, fitting into the grooves on your pistons to create a seal against the cylinder wall.

The gas nitriding process on these Supertech rings helps them stand up to the heat and friction inside an engine cylinder. This means they can help maintain consistent compression and reduce oil consumption, contributing to better overall engine performance and longevity. They are a well-built option for rebuilding or refreshing an engine where precise sealing is critical.