This exhaust header set is engineered from premium 304 stainless steel with precise tig welding for durability and performance. Designed to match OE specifications, it features a 1-7/8" collector diameter and 3" pipe diameter. The headers include a heat-resistant wrap on the collectors to protect against heat damage. By including mid-pipes that eliminate restrictive factory catalytic converters, this set can boost horsepower by over 50+ HP, offering a significant performance upgrade for 2015 and newer Ford Mustang GT S550/S650 models.