MBRP Exhaust
MBRP S6004PLM 4 Inch Down Pipe Back Aluminized No Muffler Exhaust System | 01-07 GM 6.6L Duramax | Retains Factory Catalytic Converter
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...