MBRP S60200PLM 5" Aluminum 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)