Magnaflow's catback exhaust system for the Ford Focus RS was one of the first available exhausts for the RS. It features mandrel bent, 409 stainless steel for toughness and durability in many different conditions. Tubing diameter is set at 3" which will provide awesome flow for exhaust needing to leave the turbo quickly to get all the power the engine can make. Dual tips are retained with polished units and Magnaflow even kept the exhaust valve on the left side exhaust tip for dual mode functionality, just like factory. Magnaflow always features a smooth, aggressive exhaust note and plenty of room to make great power.