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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 26 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

    26 Reviews
    4.9 out of 5 Stars
    5 Stars
    (23)
    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)
    Best bang 4 for buck upgrade 1 month ago
    5out of 5stars

    This does 4 great things: 1. reduce weight by 11 lbs from OEM 2 . Increase HP ( with Cobb stage 2 tune) 3. Increase low end Torque ( with Cobb stage 2 tune) 4. Adds Subi Rumble ( no heat rapping. ) if you want it quiet like stock, just wrap the first top by 1.5ft. Best Upgrade of all on my 2008 WRX other than having Limited Slip rear. Can Swap this out for Stock DP in 30 minutes. down this 2 times now and no issues. My Favorite for $600. Definitely better this than a Cat back system, witch yields very small improvement. A++
      
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    I hate Cobb, but... 1 month ago
    5out of 5stars

    I'm not a fan of Cobb as a brand, or the stereotype wrx people who love it so much, but this is one of the only bell mouth downpipes that comes with cats at the proper end and a premade port for a wideband to plug in. Excellent construction and fitment, and hooks up to my Blouch Dominator 2.5XTR beautifully. Excellent downpipe.
      
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    2012 STI-Cobb’s down pipe  4 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 4 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.
      
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    Great addition  5 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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    QUESTIONS & ANSWERS

    • Q: Fitment Inquiry  Wonged4 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 3 months ago  
          
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    • Q: Cobb downpipe to a tomei   Melvin sti6 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.9 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 9 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  Dominus9 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 9 months ago  
          
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