The Mahle plasma-moly piston ring set for a 4.560 in bore is specified as a low-tension engine set. The listing includes standard ring dimensions commonly used in engine rebuilds: 0.043 in top ring, 1/16 in second ring, and 3/16 in oil ring, supplied as a matched set. It’s intended as a replacement kit for engines requiring plasma-moly low-tension rings.
Mahle Rings 4.560in Bore .043in1/16in3/16in Plasma Moly Ductile Low Tension Engine Set Moly Ring Set