B58 4.5-Inch SS304 Stainless Steel Downpipe

The VRSF B58 Downpipe is engineered to significantly reduce back pressure by replacing the restrictive factory catalytic converter with a high-flow 200-cell unit (or a catless option). This upgrade results in faster turbo spool, an increase in horsepower and torque, and a more aggressive exhaust sound. Constructed from hand-crafted, tig-welded 4.5-inch 304-grade stainless steel, it ensures durability and corrosion resistance. This downpipe is compatible with both the stock catback exhaust system and most aftermarket catback systems, and it fits both Right-Hand Drive (RHD) and Left-Hand Drive (LHD) models without modification. The high-flow catted version comes with a 1-year limited warranty, while the race (catless) version includes a lifetime warranty. Please note that this downpipe is not for sale or use in California on any pollution-controlled vehicle. This downpipe is specifically designed for a range of BMW models equipped with the B58 3.0L engine, including: * 2016 – 2022 BMW M240i & M240i xDrive (F22/F23 chassis) * 2016 – 2022 BMW 340i & 340i xDrive (F30/F31 chassis) * 2016 – 2022 BMW 440i & 440i xDrive (F32/F33/F36 chassis) * 2016 – 2022 BMW 540i & 540i xDrive (G30 chassis) * 2016 – 2022 BMW 640i & 640i xDrive (G32 GT chassis) * 2018 – 2022 BMW 740i & 740i xDrive (G11/G12 chassis) * 2018 – 2022 BMW 840i & 840i xDrive (G14/G15 chassis)