MBH Motorsports E63S W213 biturbo downpipes are a must have performance upgrade.  Using more 3.5" stainless steel tubing than anyone else. There is nothing on the market that flows better than our E63S W213 downpipes. 
Our downpipes for the E63S W213 biturbo are  welded on a $20k+ dollar Miller Dynasty TIG welder and are made of 16 gauge 304 stainless steel right here in the United States. For the amount of money you spent on your E63S W213 it is not worth the risk to put on cheap downpipes made in China or Tiawan. Don't fall for the fancy marketing of the import parts we only make exhaust parts for Mercedes and we make then here in the USA.  We gaurnetee there is nothing made better for your E63S W213 than a set of MBH downpipes.   
For off road racing and competition use only. This product is not intended to be installed on a registered vehicle for use on public roads or highways and may never be installed on a  registered or licenced vehicle for use on any public roads and highways.