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. XP Series Off Road Down Pipe Back Exhaust System; 5 in.; Incl. Front Pipe/Extension Pipes/High Flow Muffler/Tail Pipe/Exhaust Tip/Clamps; Single Side Exit; T409 Stainless Steel; 4" front pipe, 6" OD tip included, replaces S6020409