More Power, Better Mileage - 1999-2004 Ford F-250 Super Duty V-10 Pickups
07. In addition to the smooth bends of the 4-inch exhaust outlet, the GBE system replaces the factory's restrictive muffler with a stainless free-flowing Dynaflow muffler. The muffler reduces exhaust backpressure with resonance-tuning that routes exhaust gases through a set of chambers and 3-1/2-inch outlet. View Related Article