Offering OEM replacement and high performance stainless steel valvesSold individually.Bronco valves meet or exceed OEM quality, with exhaust valves manufactured from SUH35HT stainless steel & intake valves manufactured from SUH3 Steel.Performance valves feature a forged one-piece construction, nitride coating, modified radius, swirl polish, chromed stems, and stellite tips. This provides reduced friction for quicker/higher revs and a longer valve life.