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We also picked up a set of K1’s connecting rods. The 6.125-inch billet 4340 steel H-beam rods came in a weight match (+/- 1 gram) set. They were shot-peened and we ordered them with ARP 2000 fasteners. The street price on the set (PN CH6125ALLB-LS8) was just over $500 with the ARP bolt upgrade.