DC Sports k20A3 Stainless Steel 4-2-1 Header
Part Number: AHS6515

DC Sports k20A3 Stainless Steel 4-2-1 Header
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    Countless hours of research and development went into the creation of this header. The change in the design of the factory exhaust system presented a new set of challenges for DC Sports engineers.

    With the stock catalytic converter welded to the secondary, the R and D Department had to find a way to create power out of the primary only. Computer aided design and extensive dyno testing led to our successful collector design. The result of our labor is a header that works with the factory secondary to produce power throughout the RPM range.


    • 9.4 HP Gain at 6700 RPM
    • 7.2 ft/lb Torque Gain at 6800 RPM
    • Available in ceramic coated mild steel and T-304 stainless steel
    • Mandrel bent tubing
    • CNC Machined Flanges
    • CARB Exempt
    • 2 Year Warranty


    • Part Number: AHS6515
    • Manufacturer: DC Sports

    Vehicle Fitment

    Acura RSX
    2002 Acura RSX Manual
    2003 Acura RSX Manual
    2004 Acura RSX Manual
    2005 Acura RSX Manual
    2006 Acura RSX Manual
    2002 Acura RSX Automatic
    2003 Acura RSX Automatic
    2004 Acura RSX Automatic
    2005 Acura RSX Automatic
    2006 Acura RSX Automatic
    Honda Civic
    2002 Honda Civic Si Hatchback
    2003 Honda Civic Si Hatchback
    2004 Honda Civic Si Hatchback
    2005 Honda Civic Si Hatchback

    Product Reviews

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    5 out of 55 out of 55 out of 55 out of 55 out of 5

    7/16/2011 by Anthony Wilkerson

    Great look, sound, with tiny but good gains!

    For the base it is mostly just a looks item, however, performance wise it does get you those decent gains especially combined with CAI and a better exhaust. If not for speed just the elimination of more back pressure helps with gas mileage! Do not get if you use a SRI the heat soak will increase with this, and please don't wrap it if you value the warranty.