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RV6 Performance High-Flow Downpipe, 2012-14 Civic Si, K24Z7, BM_CIVIC_HFC-12+

Part Number:
RV6 Performance
Product Line:
Hi-Flow Metal Downpipe
Vehicle Fitment:
Honda Civic, 2012-15 (Si)
RV6 Performance High-Flow Downpipe, 2012-14 Civic Si, K24Z7, BM_CIVIC_HFC-12+

Item is discontinued and unavailable for ordering.


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 OE converter, 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 a secondary catalytic converter, causes the exhaust to be restricted, robbing significant power.

The RV6 I4 Precat delete (PCD) and High Flow Pre Cat (HFPC) for 08+ Accord and 09+ TSX equipped with the K24Z3 engine. The RV6 I4 Precat delete replaces the highly restrictive O.E precat with a free flowing contoured casting and 2.5ö tubing. The entire assembly is made of high quality 304 stainless steel and a TIG welded by master welders.

Estimated gains are around 15WHP+ and 10WTQ+. Also offered is a test pipe and high flow cat to replace the 2nd cat which will yield even more horse power.

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

All necessary hardware for installation

RV6 will warranty the castings a welding for 24 months.


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