MBRP 2001-2007 Chev/GMC 2500/3500 Duramax EC/CC Down Pipe Back Single Side Off-Road (includes fro

Our high flow performance exhaust systems maximize exhaust flow so your engine keeps its cool with lower exhaust temperatures. Your reward will be greater fuel efficiency; more torque; more horsepower; and last but not least a sound that is pure MBRP. Black Series Down Pipe Back Exhaust System; 4 in.; Incl. Front Pipe/Extension Pipe/Muffler/Tailpipe/Hardware/5 in. OD Tip; Single Side Exit; Black Coated;