These BBK Performance short mid pipes are specifically designed to be used with BBK CNC series long tube exhaust headers for the 2005 - 2023 Dodge 6.1 6.2 6.4 Long Tubes Part 1648 or 16480 to complete installation to your factory catback exhaust. These mid pipes are made from CNC mandrel bent 3 inch tubing and feature a merged step down to allow installation to the factory exhaust system. Each BBK mid X pipe offers performance, quality and value that guarantees years of top performance for your Dodge Hemi. (Do Not work with Shorty headers - ONLY BBK Long Tubes)