BBK Performance short mid pipes with catalytic converters are specifically designed to be used with BBK full Length exhaust headers to complete the exhaust installation to your cars cat back exhaust system. This BBK mid pipe is designed and built with 2-1/2" CNC mandrel bent stainless steel tubing and high flow catalytic converters for maximum exhaust flow. All BBK mid pipes feature ball and socket style connectors for simple installation and adjustment for good ground clearance. Every BBK mid pipe offers performance quality and value that guarantees years of top performance for your vehicle. For Use with Ford F150 BBK Long Tube Headers ONLY Part #3530 or Part #35300