The VRSF catted downpipe replaces the factory catalytic converter on your B58-powered BMW with a high-flow 200-cell race cat, cutting the back pressure that holds back spool and power. It bolts on to M240i, 340i, 440i, 540i and 740i models, including xDrive, equipped with the B58 inline-six.Hand-crafted from 304 stainless steel in a full 4.5-inch diameter with a CNC-machined flange, the downpipe smooths the transition from turbo to mid-pipe and works with both the stock catback and aftermarket exhaust systems.Features Full 4.5-inch, 304 stainless steel construction, hand-welded CNC-machined stainless steel flange for a precise turbo-to-mid-pipe transition 200-cell high-flow catalytic converter reduces back pressure versus the factory cat Smooth mandrel bends reduce turbulence and improve flow Fits RHD and LHD models with no modification Compatible with the stock catback and all aftermarket catback exhausts What's IncludedVRSF catted downpipeProduct Specifications SKU: V02D 10582020 MPN: 10582020 Vendor: VRSF Fits: 2016-2022 BMW M240i, 340i, 440i, 540i, 740i (B58 3.0T inline-six, xDrive included) Frequently Asked QuestionsDoes this downpipe include a catalytic converter?Yes, it uses a 200-cell high-flow race cat rather than deleting the catalytic converter entirely.Will this fit right-hand-drive vehicles?Yes, the downpipe is engineered to fit both left-hand-drive and right-hand-drive B58 models without modification.Does it work with my stock exhaust?Yes, it is designed to mate with the factory catback as well as aftermarket catback exhaust systems.Do I need a tune to see gains?A supporting tune is recommended to unlock the downpipe's full potential; per VRSF, tuned gains run in the 25 to 30 horsepower range.
