The Blitz NUR SPEC DT is a premium exhaust system that is custom designed for your 2008-2009 STi. Unlike conventional exhaust systems, this Blitz exhausts utilize a slanted mounting design which eliminates unnecessary bends. The specially designed muffler and large diameter mandrel bent piping has no reduction of inner diameter in bend areas. The constant piping diameter size allows for superior exhaust flow superior then compared to crush bent piping.Featuring double tube tip construction, these systems are made from premium quality 304 stainless steel tubing that is precision TIG welded and polished to a high gloss, show-quality luster for good looks and great performance. You can expect a quieter, yet powerful sounding exhaust note, without excessive interior resonance. Performance increases by gains of 5-20 horsepower are common. Blitz exhaust system utilize factory mounting points and hangar locations. Gaskets and hardware are also included for easy installation.