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RV6™ 12-15 Civic SI Bellmouth Downpipe Kit

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Introducing the RV6® I4 Precat delete (PCD®) for 2012-2015 Civic Si and 2013-2015 Acura ILX equipped with the K24 engine. The RV6® I4 Precat delete replaces the highly restrictive O.E precat with a free flowing contoured casting and 2.5" tubing. The entire assembly is made of high quality 304 stainless steel and a TIG welded by our master welders.



In stock (612 items available)
  • $345.00
  • Coating
  • Options
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  • Weight
    27.0000 lbs
  • SKU

Product Description

When the K24Z3 was first introduced, many people were disappointed with the integrated exhaust manifold that made conventional "headers" 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 with 2 catalytic converters, causes the engine to be literally choked out of a good amount of power.

RV6® has been manufacturing PCDs® for the V6 Hondas for around 5 years now. Over that time, we have obtained much experience on how to make PCDs® last. PCDs® are subjected to high temperatures and constant stresses from the twisting of the engine which are unlike conventional headers that distribute the stresses between several runners all of the stresses are concentrated on one area.

- 304 Stainless cast flange sections
- 304 Stainless 2.5" tubing
- TIG welded
- Argon back gassed for pure welds

All necessary hardware for installation

RV6® will warranty the castings and welding for 24 months.

Processing takes an additional 7 to 14 business days for ceramic coating.


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.

  • Options
    Catless, Metallic High Flow Cat
  • Coating
    No Coating, Silver Ceramic, Black Ceramic
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Civic Si | 12-15