MBRP 07-10 Chevy/GMC 2500HD PU 6.0L V8 3.5in Single Side Exit Alum Cat Back Perf ExhaustOur 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 Cat Back Exhaust System; 3 1 2 in.; Incl. Front Pipe Ext. Pipe Muffler Over Axle Pipe Tailpipe Hardware 4 in. Tip; Single Side Exit; Aluminized; 4" OD Tip Included