The Kassel E90 M57 335D Downpipe is now available in both 3″ and 3.5″ versions. These parts are constructed from 304 stainless steel and utilize 304 for all flanges and bungs!
!!!100% TIG welded by hand in USA!!!
Downpipe comes with hardware and the 2 b0lt flange gasket. A stage 2 tune is required to run the pipe.