Description: 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. Exhaust backpressure is reduced and a sporty powerful tone is heard (without droning) with the BMW M Performance Exhaust System.