Magnaflow SYS C/B 2011 BMW M3 4.0L Coupe

Magnaflow is well-known for making exhaust systems that sound great and perform even better. This cat-back system for your 2008-2013 BMW M3 is designed to give your 4.0L coupe a powerful, resonant exhaust note that's perfect for grand tours or weekend drives. It's built to handle the miles while improving your driving experience with moderate exterior and mild interior sound levels.

The system uses fast-flowing, mandrel-bent 2.5-inch main piping and two straight-through mufflers. This design helps increase horsepower and torque. It terminates in a quad split rear exit with 3.5-inch polished, welded-on double-wall angle-cut tips. The entire system is constructed from durable, corrosion-resistant 409 stainless steel, ensuring it can conquer the miles with ease. Magnaflow uses extensive 3D scans during development to create a direct-fit design that installs easily and fits your M3 like a glove. It's produced using CNC precision robotic manufacturing techniques.

This cat-back system replaces your stock exhaust components from the catalytic converter backward. It comes with everything needed for installation, and Magnaflow backs it with a limited lifetime construction warranty.