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COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
Community Media
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth (Part Number: )
COBB Tuning Downpipe Catted Bellmouth
Subaru WRX 2008-2014 / STI 2008+ / Forester XT 2009-2013
Read 24 Reviews | 55 Q&As
Part # 524203
$650.00

In stock! Ships same day

Features & Product Details

RallySport Direct is proud to provide you with quality performance and racing products brought to you by COBB Tuning. 

On this page, you are looking at the COBB Tuning Catted Bellmouth Downpipe. This is a great upgrade because it combines smooth bends and a larger piping diameter which will result in an improved throttle response, reduced turbo lag, increase in both horsepower and torque, all while providing an aggressive exhaust note.

Here are the key features:

  • CAD designed
  • Single 400-grade stainless steel high-flow catalytic converter
  • 304 Stainless steel construction
  • 3" piping diameter
  • Tapers to a 2.5" stock flange
  • Factory style 02 sensor provision
  • Note that this downpipe will require a tune to maximize the full performance potential. 

    Specifications

    Brand: COBB Tuning
    Includes Catalytic Converter: Yes
    Installation Hardware Included: No
    Mouth Design: Bellmouth
    Piping Coating: No
    Piping Flex Joint: No
    Piping ID: 3.00in
    Piping Material: 304 Stainless Steel
    Piping Taper: Yes
    Tuning Required: Yes
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days


    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
    RallySport Guarantee
    WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    24 Reviews
    4.9 out of 5 Stars
    5 Stars
    (21)
    4 Stars
    (3)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    COBB Tuning Downpipe Catted Bellmouth ( Part Number: 524203)
    COBB Tuning Downpipe Catted Bellmouth ( Part Number: 524203)
    COBB Tuning Downpipe Catted Bellmouth ( Part Number: 524203)
    2012 STI-Cobb’s down pipe  2 months ago
    5out of 5stars

    The removal and install was no challenge at all. Some penetrating oil, basic tools and a couple jack stands are all you need. Make sure to get new hardware(turbo-exhaust bolts+nuts and gaskets for both ends) I also used molyB because I like to be extra.
      
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    Worth the money 2 months ago
    5out of 5stars

    Car performs better than ever after the install and after 2 weeks of driving it, I still have an ear to ear smile, listening to all those turbo sounds. Only complaint would be that the downstream O2 sensor location was back further than stock and took some creative wire relocation to make it reach.
      
    Was this review helpful?
    Great addition  3 months ago
    5out of 5stars

    A definite needed addition 2 your exhaust system. The best parts are the performance it adds when tuned, as well as sound enhancements. Has a nice open bell mouth 2 expell gases, but I would definitely recommend getting an external wastegate 2 minimize turbulence leaving the turbo 2 fully see the downpipes potential!😎
      
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    1 of 1 people found the following review helpful
    Good quality! 4 months ago
    5out of 5stars

    Installed the COBB down pipe along with the Invidia Q300 catback exhaust, tuned with COBB accessport stage 2+ SF. Took a little time to find all the screws to the stock heat shield. Other than that everything else was pretty straight forward. Loving the sound and performance of the new exhaust. Definitely recommend this product.
      
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    1 of 1 people found the following review helpful
    Downpipe overview  8 months ago
    5out of 5stars

    When first pulling it out of the box you can really see the craftmanship that went into making it the price it is, and why it’s a high seller. When comparing it to the stock downpipe you can really see how much the stock one restricts the flow. The diameter is significantly bigger, and the material and quality is far more. The install process takes time, but isn’t frustrating as long as you have the proper tools and setup for the job. I’d definitely recommend buying extra screws however, gasket, donut ring. You can definitely hear a change in the tone(deeper) and throatiness compared to having just a catback(Cobb) setup. It’s not much louder, but does give it a slight increase in the two I just mentioned. It sounds great when you really get on it, and gives off more pops when both up and down shifting. When flashing to the stage two tune you can definitely see a performance gain as it pulls harder in each gear and puts down more boost. I really enjoyed the car a lot more around twisty hilly roads. The power was there when you needed it. I’d say it’s well worth the upgrade
      
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    QUESTIONS & ANSWERS

    • Q: Fitment Inquiry  wonged2 months ago

      I have a 2014 Subaru Impreza WRX (sedan, USDM). I'm currently running a Tomei Expreme Ti catback exhaust system. If I'm understanding correctly, the following items would suffice in order to install the COBB Tuning Downpipe without any issues; turbo to downpipe gasket, oem downpipe to 3" catback adapter, downpipe donut gasket. Can you please advise if I'm missing anything? Thank you in advance!
      • 0 of 0 people found the following answer helpful

        A:  You are correct! The only other item that I would recommend is a 3" 2 bolt gasket for the catback side of the adapter.

        Brady R @ RallySport Direct 2 months ago  
          
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    • Q: Cobb downpipe to a tomei   Melvin sti4 months ago

      I have a 2011 Sti has a Cobb downpipe how do I make the tomei fit with no leaks?? Any help?
    • Q: Bolt up to Borla?  U.K.7 months ago

      I have a Borla Catback exhaust, specifically model number 140312. Would there be any issue bolting this up? Additionally, should I be entertaining a stage 2 clutch at this point? I also have the Cobb SF intake and accessport with stage 1+ tuning.
      • 0 of 0 people found the following answer helpful

        A:  Unfortunately, you would need an adapter, and you should not need to upgrade your clutch.

        Devan M. @ RallySport Direct 7 months ago  
          
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      • 0 of 0 people found the following answer helpful

        A:  Should I use the Invidia instead? Or would that need an adapter, too? Is this adapter something a standard exhaust shop would have?

        U.K. @
          
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    • Q: Fitment  Dominus7 months ago

      Hi will this Cobb Dp mate with the fujitsubo 2.75" catback? If not which dp will fit?
      • 0 of 0 people found the following answer helpful

        A:  The downpipe tapers down to a 2.5" so it will not fit and unfortunately, we do not sell a downpipe with 2.75" diameter.

        Devan M. @ RallySport Direct 7 months ago  
          
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    This Part Fits

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