RV6 Catted Downpipe & Front Pipe Combo for 2017-2021 Honda Civic SI – RV6 Performance

RV6 Catted Downpipe & Front Pipe Combo for 17-21 Civic SI

Lead Time: 4-6 Weeks

$849.00 USD

  • Availability: Out Of Stock

The RV6 Civic SI downpipe and frontpipe was completely designed using Solidworks 3D modeling and our Romer CMM system for extremely precise measurements. The transition from turbo 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. The entire system was designed using full radius bends for a optimize turbulence free flow.

On a turbocharged engine, we understand the importance of thermal management. This is especially important with the air intake path directly over the downpipe.


  • 300 Cell High Temperature Cat
  • 304 Stainless Precision Cast transition sections
  • 304 Stainless 3.0” OD Tubing
  • Quality USA made Clampco Vband clamp for leak free connection
  • Fully TIG welded
  • Argon back gassed for pure welds


  • 2 X M10-1.25 X 20mm Flange Bolt (HFB00002)
  • 3 X M10-1.25 X 30mm Socket Cap Screw (HSCP00002)
  • 5 X M10-1.25 x Flanged Lock Nut (HFLN00002)
  • 1 X 3.0" 16+ Civic Frontpipe to Exhaust Gasket (GA00008)
  • 1 X 8mm Hex L-Key
  • 1 X V-Band Clamp (99800-0382)

RV6 will warranty the castings and welding for 24 months.

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

Disclaimer - Competition Use Only
Items are sold for racing competition only and not legal for use on highway or street vehicles, or other non-racing competition off-road vehicles.