DC Sports 02-06 RSX Base/02-05 Civic Si Ceramic 4-2-1 Header
Part Number: AHC6515

DC Sports 02-06 RSX Base/02-05 Civic Si Ceramic 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: AHC6515
    • 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

    5/1/2011 by Israel Leon

    Decent mod for reasonable price

    Install was simple but I did run into a few issues. I disliked how DC Sports does not include a donut gasket for the header. I had to wait a whole day to get a gasket shipped to my house since all of the stores in town (Acura dealer included) did not have the part in stock. Besides that, the overall product worked fine. My car feels lighter and I did notice an increase in strength throughout the whole power band. The performance gained feels balanced and that is what I was looking for. I am more than satisfied with the results. If you are considering adding this header to your vehicle I highly recommend purchasing a donut gasket. All in all, you will not be disappointed with the 4-2-1 header.

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

    10/15/2010 by hrtl5

    great product

    Works great no problems

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

    5/15/2010 by jeremy fawcett

    great buy!!!

    It is a very nice item...love the looks of it when you look into the car. you'll notice a small amount of gains but not much...one problem that did come up was the header screw holes that were supposed to bolt to the bracket were not threaded...planning to go to a shop to get that fixed...