The CP Pistons gas‑nitrided steel piston ring set for an 85.6mm bore includes a 1.0mm top ring (THG), a 1.2mm second ring, and a 2.8mm flex vent oil ring. These rings are specified as gas nitrided steel construction and sized for engines with the listed bore. The set provides the defined ring dimensions for builders matching rings to 85.6mm bores and CP piston specifications.
CP Ring 85.6mm Bore Gas Nitrided Steel 1.0mm Top Ring THG 1.2mm 2nd Ring 2.8mm Flex Vent Oil Ring