The Manley Pro Series I-Beam Connecting Rod Set is available for the mad scientists who blew the welds off the intake manifold. These particular rods are forged from 4130 aircraft quality vacuumed degassed material. In another words, they’re super strong. These rods are made for those looking to add forced induction, and need a strong component that can keep up with the power. Included with the Manley Pro Series I-Beam Connecting Rods is a set of 3/8” ARP 2000 fasteners.