MBS 4.5" B58 Catless Downpipes 2016+ BMW 240i/340i/440i/540i/740i

We are delighted to present our MBS catless downpipe for your B58 M240i, 340i, 440i, 540i, 740i & xDrive models. These downpipes offer incredible value for your B58 engine and are available in both race and high flow versions.

By removing the restrictive factory catalytic converter, back pressure is significantly lowered, resulting in faster spool times, increased power, and a more aggressive exhaust note. Our downpipe boasts a full 4.5" stainless steel construction and a CNC 304-grade stainless steel flange, ensuring a smooth transition from the turbo to the mid pipes. Every MBS downpipe is meticulously crafted from SS304 grade stainless steel.