MBRP S60200SLM 5" T409 Down Pipe Back, Single Side (No Muffler) for Chevy/GMC Diesel Fits 2001-2007 Chev/GMC 2500/3500 Duramax, Classic, EC/CC 5" Exhaust System, 4" front pipe, no tip included Large radius mandrel bends Free flow muffler design Two piece tail-pipe (tip not included)