Evolution Racewerks Catless Downpipe, BMW Fxx N55 >2013

Expert's advice:

The Evolution Racewerks 4" catless downpipe for the BMW F-Series M135i, M235i, 335i, and 435i (N55 engine, after 07/2013) is completely made of stainless steel. Please note that the catless downpipe can cause problems due to the road regulations in your country.

Mark Hendrikx - Automotive engineer at Mosselman