Ditch that factory restriction and increase exhaust flow right off the turbo with a 3" MBRP downpipe. Using 16-gauge mandrel bent piping keeps exhaust flow smooth with no interruptions. A 4" flex coupling is lined for superior flow and longer life. Constructed from heavy duty Stainless steel, and all factory mounting points are retained for a simple bolt-on installation. The MBRP downpipe is a direct fit with the stock Focus ST exhaust. However, an extension pipe is included to fit the downpipe to any of the MBRP cat-back exhaust systems. Includes all necessary hardware.