N55 Downpipe Upgrade

The VRSF N55 Downpipe Upgrade is engineered to enhance the performance of your N55-powered BMW, offering a significant improvement over the stock exhaust system. This downpipe is highlighted as the most cost-effective modification for models such as the 2012-2018 BMW M135i, M235i, M2, 335i, and 435i. Constructed from hand-crafted, tig-welded 304-grade stainless steel, the downpipe features smooth radius bends designed to minimize turbulence and maximize flow. The flanges are precision-machined from billet 304-grade stainless steel. A 200-cell high-flow catalytic converter option is available. With a tune, this downpipe is reported to deliver gains of 20-25 horsepower. Installation notes indicate specific requirements based on production date and vehicle model. M135i and 335i models produced up to July 2013 require the 3.5-inch version, while models produced after that date, along with all M235i and 435i models, require the 4-inch version. It is advised to confirm the turbo wastegate location to ensure correct fitment. The product comes with a lifetime warranty, though the ceramic coating and catted versions have a 1-year warranty. Note that VRSF downpipes may trigger a catalyst code, potentially affecting emissions testing in certain states without appropriate tuning.