The MagnaFlow BMW M3 Touring Series 15544 brings enhanced engine sound and dyno-proven performance to your 4.0L 2008-2013 BMW M3 with a healthy helping of our deep, resonant signature exhaust note at Moderate exterior and Mild interior sound levels. Thanks to its durable, corrosion resistant stainless steel design, this BMW M3 exhaust system will handle whatever tarmac you decide to leave your mark on. This performance exhaust kit features a crossmember-back layout designed to replace your BMW M3’s exhaust system from the crossmember on back. With its fast-flowing, mandrel bent 2.5in. main piping and 2 Straight-Through muffler ending in a Quad Split Rear exit with 3.5 Polished Welded-Double Wall-Angle Cut-Folded Edge tips, your muscle car will be sounding as awesome as it looks. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 15544 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow’s limited lifetime construction warranty.