Developed using state-of-the-art CAD and FEM technology, this stainless steel exhaust system unleashes the true sound and character of the TwinPower Turbo four-cylinder engine in the 328i. This exhaust also provides an aggressive look by displaying twin 70mm chromed-plated tips that are laser engraved with the M logo. BMW has carefully engineered this system to enhance exhaust sound while also increasing volume and reducing backpressure. The M Performance Exhaust combines premium sound and style for an exhilarating driving experience every time you turn the key. This exhaust system is made of high quality stainless steel with chrome-plated tail pipes. Developed with the latest CAD and FEM technology for the best fit and OEM quality. Due to an optimized exhaust flow, this muffler produces an incredible note without the inherent interior cabin droning noise associated with some aftermarket exhaust systems. Exhaust backpressure is also decreased with the BMW Performance exhaust. Clamping sleeves and other essential fastening material is included.