MBRP Exhaust PRO Series, Cat-Back System. Sound & Style Performance is one thing but at MBRP we believe that appearance and sound are just as important. Every MBRP performance exhaust system has been specifically tuned to get the optimal sound from your vehicle. With our stamped logo on the tip and our unmistakable styling, there is no question that you have the hottest performance exhaust on the road - MBRP Cat Back Performance Exhaust System; 3.0 in.; Triple Center Outlet; T304 Stainless Steel; 2 Outlets 4 in. Outer Diameter; 1 Outlet 5 in. Outer Diameter; w/Burnt End Tips; Three Tips Included, (2) 4" OD Out Burnt End, (1) 5" OD Out Carbon Fiber.