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CP Pistons piston ring set for an 87.25mm bore, made from gas-nitrided steel. The set includes a 1.0mm top ring, a 1.2mm second ring and a 2.8mm flex-vent oil ring. These rings are specified to seal combustion and control oil at the stated bore size for engine rebuilds or replacements; the gas nitriding treatment provides surface hardening appropriate for long-term wear in matched piston and cylinder assemblies.
CP Rings 87.25mm Bore Gas Nitrided Steel 1.0mm Top Ring 1.2mm 2nd Ring 2.8mm Flex Vent Oil Ring
