Dinan's free flow exhaust for the 335 Sedan improves exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be and pleasantly aggressive under harder acceleration. 100 percent stainless steel construction and exacting specifications ensure that the system fits correctly using the factory hangers and will resist corrosion for years to come. The design reduces overall weight as well and features 3.5'' black tips for a more aggressive high performance look. Fits: BMW; 3 Series; 335i and xDrive; Sedan; E90; 2007-2011.