Description: Exhaust backpressure is reduced and a sporty powerful tone is heard with the BMW M Performance Exhaust System. Please note: 2 finishers are required per exhaust. Developed using state-of-the-art CAD and FEM technology, this stainless steel exhaust system improves the sound quality and volume of the hallmark BMW inline six-cylinder engine. A unique, high-tech look is provided by two chrome-plated 80 mm exhaust tips which are laser engraved with the M logo.