MBRP 2001-2007 Chev/GMC 2500/3500 Duramax EC/CC Down Pipe Back Cool Duals Off-Road (includes fron

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. XP Series Cool Duals™ Off Road Exhaust System; 4in.; Incl. FrontPipe/Ext.Pipes/Muffler/Tailpipes/Over Axle Pipes/Hardware/5 in. Tips; Dual Split Rear Exit; T409 Stainless Steel;