The MagnaFlow SYS C/B 01-05 BMW 330I/CI 3.0L is a performance exhaust system designed specifically for the BMW 330I/CI 3.0L. It is constructed from 409 stainless steel and features mandrel-bent tubing for maximum flow. The system includes a high-flow muffler, polished stainless steel tips, and all necessary hardware for installation. This system is designed to improve both sound and performance, providing a deep, aggressive sound and increased horsepower and torque.