Fits: 2001–2006 BMW M3 Magnaflow16602CatbackThe MagnaFlow 2001-2006 BMW M3 Sport Series Cat-Back Performance Exhaust System 16602 enhances your 3.2L 2001-2006 BMW M3 with an aggressive character that is sure to help you stand out from the other BMW M3 you encounter on the street. With its 2.25in. diameter fast-flowing mandrel bent main piping that passes through 2 Straight-Through mufflers before ending in a Quad Split Rear exit with 3in. Polished Welded-On Double Wall Angle Cut Folded Edge tips, this dyno-proven BMW M3 exhaust system refuses to be ignored. As such, 16602 is tuned to produce our powerful, resonant signature exhaust note at Aggressive exterior and Moderate interior sound levels, so please check to ensure compliance with local noise regulations. The system's cat-back design replaces all your import's stock exhaust components from the catalytic converter on back. Extensive 3D scanning and CNC precision robotic manufacturing techniques are used to ensure that your exhaust system fits perfectly with just a simple do-it-yourself installation process. The durable, corrosion resistant stainless steel construction of 16602 is backed by MagnaFlow's limited lifetime warranty.MagnaFlow Touring Series performance exhaust systems are an ideal choice for those seeking increased performance and better economy. Their straight-through flow designs deliver the ultimate in unrestricted horsepower and torque, while maintaining exhaust efficiency. An engineered balance of interior and exterior noise levels, these kits offer the smooth, deep sound you want—and the wide-open power you need! Touring Series systems feature 409 stainless steel components, all mandrel-bent tubing, and a lifetime construction warranty; they're tested against SAE j1169 standards. MagnaFlow Touring Series performance exhausts are available in numerous configurations, including cat-back and rear axle-back; single, dual, tri, or quad mufflers; and several outlet and tip options. Order the model tailored for fitment on your specific vehicle.