MBRP 2009 Dodge Challenger RT 5.7L Hemi Cat Back Cool DualsOur 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 Cool Duals* Cat Back Exhaust System; 3 in.; Incl. Ext. Pipe Resonator Tailpipes Mufflers Hardware Rectangular Tips; Dual Split Rear Exit; T409 Stainless Steel; Rectangular tips included