Supertech 86.5mm Bore Piston Rings - 1x3.30 / 1.2x3.60 / 2.8x3.10mm High Performance Gas Nitrided

When you're rebuilding an engine and need reliable sealing for your pistons, a good set of piston rings is crucial. These Supertech rings are made for an 86.5mm bore, which is a common size for many performance and stock engine builds. They're designed to create a tight seal between the piston and the cylinder wall, which is key for maintaining compression and preventing oil from getting into the combustion chamber.

What sets these rings apart is the gas nitriding process they go through. This hardens the surface of the rings, making them more resistant to wear and heat. This is especially important in performance applications where engines are pushed harder. The specific dimensions of these rings are 1x3.30mm for the top ring, 1.2x3.60mm for the second ring, and 2.8x3.10mm for the oil control ring, ensuring a proper fit and function within the piston grooves.