Introducing the RV6® Modular Downpipe for the 2016+ Civic (SI) equipped with the Turbocharged 1.5L (L15B7) engine. This downpipe replaces the highly restrictive O.E precat/down with a free flowing contoured casting and 3.0"/2.5" tubing. The modular designs allows the 2.5" portion of the downpipe to be removed at the Vband connection and replaced 3" front/A pipe. We maintain the upper factory heat shield mounting points for thermal management. The entire assembly made of high quality 304 stainless steel and is TIG welded by our master welders in the USA.