This set of connecting rods are made from aerospace grade, 4340 chromoly steel. This set of 1JZ connecting rods use ARP Custom Age 625+ fasteners. BC High performance connecting rods deliver the reliability required to turn up the boost, the nitrous, and/or the RPM range. Every rod is CNC machined, micro-polished surface finished treatment. It is equipped with Aluminum, silicone, bronze pin bushings and finish honed to exacting tolerances.
