BMW 1 Series M135i xDrive F40 19-24 - 3" GPF Back Valved Exhaust System

Direnza exhaust systems are manufactured from T304 grade brushed stainless steel, perfect for those intense track-sessions. With built-in valves, the noise level is in your control. A direct replacement for the stock part, Direnza mandrel-bent exhaust components are fully TIG welded and feature CNC-machined flanges for strength and an accurate, secure fit every time. Engineered to not only improve power and torque across the entire RPM range but Direnza exhaust components improve throttle response to help you push further and faster on the road or the track.