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.
High Flow Muffler Assembly; 4 in.; Fits To Stock Only; T409 Stainless Steel;
Cummins 600/650 Fits to Stock only.
