MBRP S6012409 4 Inch Cat Back Exhaust System Single Side T409 Stainless | 06-07 GM 6.6L Duramax 2500HD / 3500HD LBZ

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.