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Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
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User Media for: Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
User Media for: Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+
User Media for: Mishimoto Stainless Steel Cat Back Exhaust - Subaru WRX/STI 2015+

Mishimoto Stainless Steel Cat Back Exhaust

Subaru WRX/STI 2015+

Read 5 Reviews | 1 Q&As
Part # MMEXH-WRX-15
$1,114.95

Estimated to ship in 26 days
ANY QUESTIONS?

Features & Product Details

RallySport Direct proudly carries a great selection of both performance and cooling upgrades brought to you by Mishimoto. 

Here, you are looking at the Mishimoto Stainless Steel Cat-Back Exhaust System. This is a high-performance cat-back exhaust system designed with smooth bends that are combined with an increased piping diameter. The result is an increase in both horsepower and torque, all while producing an aggressive exhaust note. 

 

DETAILS:

  • Direct fitment
  • Dyno-proven maximum gains of up to 9 WHP and 8 WTQ and peak gains of 4 WHP and 3 WTQ using 93 octane fuel while maintaining safe AFRs on a stock tune
  • Extremely aggressive turbo and exhaust tone under acceleration and boost
  • Mates with the Mishimoto, stock, or most aftermarket downpipes
  • Designed with oval mufflers that prevent highway drone
  • Quad 3.5" staggered double-wall polished tips
  • 304 stainless steel mandrel-bent construction
  • 3" to 2.25" exhaust split helps maintain proper exhaust velocity
  • TIG-welded
  • Includes v-band clamps, hardware, and gasket
  •  

     

    Product Video

    Specifications

    Brand: Mishimoto
    Exhaust Orientation: Straight Exit
    Installation Hardware Included: Yes
    Piping Coating: No
    Piping Flex Joint: No
    Piping ID: 3.00in
    Piping Material: 304 Stainless Steel
    Piping Taper: No
    Silencer Included: No
    Tip Material: Stainless Steel
    Tip Qty: 4
    Tip Shape: Round
    Tip Size: 3.50in
    Mfgr. Warranty: Limited Lifetime
    Condition: New Product
    Return Policy:
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    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    5 Reviews
    4.4 out of 5 Stars
    5 Stars
    (4)
    4 Stars
    (0)
    3 Stars
    (0)
    2 Stars
    (1)
    1 Stars
    (0)
    Customer Photos and Videos
    Mishimoto Stainless Steel Cat Back Exhaust ( Part Number: MMEXH-WRX-15)
    Mishimoto Stainless Steel Cat Back Exhaust ( Part Number: MMEXH-WRX-15)
    Mishimoto Stainless Steel Cat Back Exhaust ( Part Number: MMEXH-WRX-15)
    Very well made 4 years ago
    5out of 5stars
    Sean
    The exhaust came quick and very well packaged. Took 30mins- 1 hour to install very easy and no issues with fitment. With stock downpipe make sure to get the 3 inch adapter so no gas leak. Noise wise it is quiet still but has a small rumble compared to the stock and can hear the car when idling unlike the stock exhaust. Over all was a great choice
      
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    Mishimoto catback exhaust  5 years ago
    2out of 5stars
    Kupal
    It's ok I was hoping for a 3' all the way. When it came on the Y pipe it's only 2' 1/2 so yea.
      
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    1 of 1 people found the following review helpful
    Stock 2015 Subaru WRX STi - Mishimoto Catback Exhaust System 6 years ago
    5out of 5stars
    WRX Curve
    I see a lot of people asking for videos of STOCK STi's with the exhaust, but the major outlets are only posting videos with other parts as well, such as downpipes and intakes. These significantly change the sound. I decided to make this video after installing it pipe (to my neighbor's delight). I have no other aftermarket parts on my car; this is the first. I love the deep sound this exhaust provides; this video doesn't do it justice. My STi now sounds as powerful as it feels. While the performance benefits of this system are minimal (3-4 HP gains), the sound is exactly what I was looking for. Loud and throaty!
      
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    Mishimoto Catback Exhaust Installed on our 2015 WRX 6 years ago
    5out of 5stars
    Rick C.
    Love the way this sounds with the FA engine!
      
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    0 of 1 people found the following review helpful
    Mishimoto Catback Exhaust Installed on our 2015 STI 6 years ago
    5out of 5stars
    Rick C.
    Looks as good as it sounds! Check it out!
      
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    QUESTIONS & ANSWERS

    • Q: 2015 STI Stock downpipe   James_boehme926 years ago

      Any way to get a video review on the mishimoto catback on a stock STI and info about the amount of drone it has? Thank you!
      • 0 of 0 people found the following answer helpful

        A:  Unfortunately, we do not have any videos of the exhaust on a stock setup, as our shop STI has an extensive amount of upgrades. Most aftermarket exhausts will have some drone, due to the reduced restriction of the exhaust.

        Brady R @ RallySport Direct 6 years ago  
          
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