Rods are forged of high strength steel alloy. These are forged overseas, machined, tested and inspected right here in West Babylon so we can control the quality! KP was able to hold the extremely tight tolerances just like OEM. Our rods are A beam design, which are much stronger than stock and almost the strength of H beam, at a fraction of the weight. Rods come standard with an oil embedded bronze wrist pin bushing. They weigh less than stock, and WAY less than CP. Lighter and stronger than stock is a huge plus! Rods are rated for 700 HP. They come standard with a mark, which means they require (green) bearings usually. KP rods come standard with Aftermarket rod bolts, we highly recommend using the ARP rod bolts listed below. Excellent for race machines and SXR race engines due to their low weight. Does not fit STX 12F.