Give your BMW F87 M2 competition sound more aggressive than take a peak at the aFe Power Mach Force XP catback exhaust system with black tips. This 3 inch to 2.5 inch exhaust system is constructed of brushed 304 stainless steel tubing and includes a high flow stainless steel muffler. Making an aggressive sound & adding horsepower to your F87 M2. The XP catback uses the factory style exhaust valve into the system (motor not included) which helps regulate, direct & control the flow of exhaust gases by opening, closing or even partially obstructing passageways depending on throttle positioning. A mitered merge collector is used to decrease turbulence & increase exhaust velocity which results in more horsepower, torque and improved throttle response.