BBK shorty 2009-2012 Ram 5.7L Hemi exhaust headers are designed for direct bolt-on performance to the existing stock exhaust system. Each BBK exhaust header system is CAD designed and is manufactured with 1 3/4"" CNC mandrel bent tubing for unrestrictive airflow and a one piece laser cut 3/8" flange for added strength and durability. ALL BBK exhaust headers are pressure tested to ensure leak free performance. Each BBK shorty exhaust header for the 2009-12 Ram Hemi has been designed and dyno tested at the BBK headquarters in Southern California to Maximize performance. BBKâ€ s Ram headers offer distinctive quality that guarantees many years of top performance. These BBK CNC Series headers for the 2009-2012 Ram 5.7L Hemi are also available with our optional high-temp show quality Silver polished ceramic coating or chrome finish. Each exhaust header kit comes complete with gaskets, hardware, and installation instructions.