Introducing the RV6® PCD®/Downpipe for the 2016+ Civic equipped with a naturally aspirated K20C2. This downpipe replaces the highly restrictive O.E precat with a free flowing contoured casting and 2.5" mandrel bent tubing. The entire assembly made of high quality 304 stainless steel and is TIG welded by our master welders in the USA. The RV6® PCD Downpipe for the 2016+ Civic 2.0L was completely designed using Solidworks 3D modeling and our Romer CMM system for extremely precise measurements. The transition from engine to tube was designed using advance flow analysis for maximum flow characteristics. This transition was then made into a high strength 304 stainless precision casting. This allows for a very durable product with optimize turbulence free flow. When Honda first introduced the integrated exhaust manifold maybe people were upset that conventional “headers” were now obsolete. This is especially true since the K-Series platform produced some very impressive performance gains with quality headers. When you look at the O.E precat, you can easily tell it was designed to be made cheaply and mass produced. The components are stamped and welded with no consideration for turbulence or restrictions. This combined the 2 catalytic cores causes the engine to be literally choked out of a good amount of power. Specifications:- 304 Stainless Precision Cast transition- 304 Stainless 2.5” tubing- 304 Stainless Flange- Fully TIG welded- Argon back gassed for pure weldsIncludes:- Non Foulers- Chromoly Exhaust Studs- Gaskets and Hardware Fits:2016-2021 Honda Civic 2.0L (Non-Turbo)2022+ Honda Civic 2.0L (Non-Turbo) Processing takes an additional 7 to 14 business days for ceramic coating.Intended FOR OFF ROAD USE ONLY.RV6® Performance LLC products are sold for off-road use only. All performance modifications and installations are at the customers own risk. RV6®Performance LLC holds no responsibility either implied or otherwise for mechanical, electrical or other failure when using any aftermarket performance products. Items sold for off-road use only are illegal in many states and provinces and are intended for racing vehicles which may never be used on a public road.By purchasing any aftermarket performance product, the customer takes full responsibility for any use, and/or misuse of the product and agrees that RV6® Performance LLC holds no responsibility for any consequences, legal, or other, of such use and/or misuse.