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Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Community Media
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth (Part Number: )
Tomei Expreme Downpipe Big Mouth
Mitsubishi Evo X 2008-2015

Features & Product Details

RallySport Direct proudly carries a great selection of quality engine upgrades and enhancements from our friends on the other side of the pond, Tomei.

On this page, you are looking at the Tomei Expreme Wide Mouth Downpipe. This design combines a wide mouth flowing design with a 3-inch pipe to remove the restriction and turbulence associated with the OEM design for improved performance and sound.

Here are the details:

  • Direct bolt-on design that retains the original stock layout
  • Larger in size and diameter
  • Lost wax casting process for maximum durability
  • 76.3 piping diameter
  • 4.8lbs
  • O2 bung for wideband AFR gauge
  • Flex pipe integrated into the design
  • Includes new gaskets
  • Includes a clamp and new hardware making it ready for the installation
  • Specifications

    Brand: Tomei
    Includes Catalytic Converter: No
    Installation Hardware Included: Yes
    Mouth Design: Bellmouth
    Piping Coating: No
    Piping Flex Joint: Yes
    Piping ID: 3.00in
    Piping Material: 304 Stainless Steel
    Piping Taper: No
    Mfgr. Warranty: No Warranty
    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

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    REVIEWS & CUSTOMER MEDIA

    6 Reviews
    5 out of 5 Stars
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    Customer Photos and Videos
    Tomei Expreme Downpipe Big Mouth ( Part Number: 433001)
    Tomei Expreme Downpipe Big Mouth ( Part Number: 433001)
    Tomei Expreme Downpipe Big Mouth ( Part Number: 433001)
    Tomei Expreme Downpipe Big Mouth ( Part Number: 433001)
    Tomei Expreme Downpipe Big Mouth ( Part Number: 433001)
    Perfect Quality/ Easy Install 2 years ago
    travisrgs
    I recently decided to do a full turbo back exhaust on my Evo. My first impressions on this downpipe was how high quality the pipe looked and felt, as well as the high quality welds used throughout. It also came with every gasket needed, as well as a much easier install with the flex joint and two piece design. If deciding between this and the AMS downpipe, I would highly recommend the Tomei downpipe for identical high quality, performance, and a lower price point.
      
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    Great! 3 years ago
    LogJammin
    Just buy it. You won't regret it!
      
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    Great product 3 years ago
    mkivjosh49698
    Love the sound of my car, and the car definitely feels quicker since installed. It was a PITA to get on but that's just the 4b11 for you. Great product. Would buy again.
      
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    love it ! 4 years ago
    AaronA65
    i now have the full tomei system and all i gotta say is that i love the sound, does make a HUGE difference with just a straight pipe
      
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    Amazing Exhaust System 4 years ago
    Waters910
    So I have the full exhaust system from down pipe to catback and it sounds amazing and is a beautiful looking exhaust. The figment on the evo x is great. No issues with clearance on my h&r lowering springs. Very aggressive tone. Cabin noise is low when cruising. Cold start 40 below is loud for about 4-5 min. 50 and above loud for about a min. Idle is quiet but the low tone can be heard for about 50ft. Nice! Super lightweight and easy to install. My artisan raceback was heavy and ugly after use. I installed this exhaust in fall of 2013. Still clean and luckily haven't scrapped the muffler. Great buy. Hope this helps.
      
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    QUESTIONS & ANSWERS

    • Q: Requirements.  july.relatores6 months ago

      I'm about to buy the Tomei Expreme Ti Titanium Catback Exhaust for my 2012 evo x mr and was wondering if I need the Tomei Expreme Downpipe Big Mouth to get the full experience of the exhaust itself. Also, if I do buy both, which I plan to regardless, would my check engine light come on? (my evo x mr stock btw)
      • 1 of 1 people found the following answer helpful

        A:  To gain the most power out of your exhaust we do recommend going with a downpipe. Your check engine light will be on, to get rid of that we recommend your car tuned for a downpipe.

        Luis L. @ RallySport Direct 6 months ago  
          
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    • Q: Going full turboback  Djtevox1 year ago

      So I recently installed the hks hi-power cat back on my 2014 evo gsr and was think about going full turbo back. Would the tomei downpipe and Cobb catted test pipe be a good fit with the hks catback?
      • 0 of 0 people found the following answer helpful

        A:  You should have no problem installing those 3 components together as they should all be OEM replacements.

        Connor M. @ RallySport Direct 1 year ago  
          
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    • Q: material question  Sriracha3032 years ago

      is this titanium like the rest of the expreme pieces?
    • Q: 2015 Mitsubishi EVO X GSR Fitment  ericlyh3 years ago

      Doe it fit with 2015 Mitsubishi EVO X GSR? Will it bolts up to the factory catalytic converter?
      • 0 of 0 people found the following answer helpful

        A:  We have not had the opportunity to test on the 2015 models but it is likely since nothing has changed between years. This is designed to bolt up to factory length exhaust systems.

        Nick S. @ RallySport Direct 3 years ago  
          
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