B58 80mm Midpipe Upgrade

The CTS Turbo F-series B58 80mm Midpipe Upgrade is engineered to optimize exhaust flow and elevate the performance of your BMW. Its primary function is to replace the factory's restrictive midpipe with a high-flow, 80mm diameter unit. This design aims to increase throttle response, improve turbo spool characteristics, and produce a more aggressive, yet refined, exhaust note characteristic of the B58 engine. The midpipe is constructed from durable T304 stainless steel, ensuring longevity and resistance to corrosion. It features CNC-bent tubing for precise fitment and utilizes all factory mounting points for a direct bolt-on installation. This ensures seamless integration with the OEM rear muffler and other exhaust components, delivering noticeable gains in both sound and performance without introducing exhaust drone or rasp. This midpipe upgrade is suitable for both stock and tuned vehicles, serving as a key component to unlock the full auditory and performance potential of the F-series BMW equipped with the Gen1 B58 engine. Key features include unobstructed 80mm exhaust flow, robust T304 stainless steel construction, and CNC bends for perfect alignment. This midpipe is specifically designed for the following BMW F-series B58 Gen1 models: 2016–2019 BMW 340i (F30/F31), 2017–2020 BMW 440i (F32/F33/F36), 2016–2019 BMW 340i xDrive (F30/F31), and 2017–2020 BMW 440i xDrive (F32/F33/F36). It is important to note that this midpipe is not compatible with B58TU (GEN2) engines found in later G-series models. It is compatible with both OEM and aftermarket downpipes.