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This CP piston ring set lists a 1.0mm top ring, 1.2mm second ring and a 2.8mm oil ring sized for a 3.937in bore. The detailed ring thicknesses and bore specification allow engine builders to match rings to the correct piston and cylinder dimensions during a rebuild. The listing provides the main ring geometry necessary for proper sealing and oil control in compatible engine assemblies.
CP Ring Set 1.0mm Top - 1.2mm Second - 2.8mm Oil - 3.937in Bore
