Invidia N1 Dual Cat Back Exhaust

2015-2020 Subaru WRX & STI

$790.45 - $814.87

SKU: 5STIGTX-PARENTWe price match!


Invidia produces some of the most popular exhaust systems for the WRX / STI. Their designs result in an excellent free-flow exhaust system with optimized back pressure, giving greater horsepower, torque gains and a rich deep sporty sound. The use of SUS304 polished stainless steel piping, mandrel bent to shape, state of the art CNC machine made flange, robot TIG welding and double wall polished stainless steel or titanium tips, provides outstanding durability and appearance.
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  • Piping Diameter: 76mm
  • Tip Diameter: 101mm
  • Deep sporty sounding exhaust note.
  • 304 Stainless Steel
  • Piping ID: 76mm
  • Available in Stainless or Titanium Tips

Subispeed Exhaust sound and overview video

Give your 2015-2020 WRX or STI a Rich Deep Sporty Exhaust Note

Invidia produces some of the most popular exhaust systems for the 2015-2020 WRX & STI. Their designs result in an excellent free-flow exhaust system with optimized back pressure, giving greater horsepower, torque gains and a rich deep sporty sound. The use of SUS304 polished stainless-steel piping, mandrel bent to shape, state of the art CNC machine made flange, robot TIG welding and double wall polished stainless steel or titanium tips, provides outstanding durability and appearance.

Outstanding Build Quality

For a good balance of price and performance, Invidia Exhaust is constructed with high-quality SUS304 stainless steel, CNC-machined flanges, and manufactured with a polished finish. Each system features mandrel-bent stainless-steel piping for maximum exhaust flow and reduced back pressure. These exhausts are engineered to produce strong mid to top-end power gains, as well as an increase in horsepower and torque.


  • 2015-2020 Subaru WRX
  • 2015-2020 Subaru STI

18 customer reviews

Average rating
(based on 18 reviews)
Ease of Installation
Fit / Quality
Overall Satisfaction
  1. Very Pleased

    By FreakyT December 5, 2022

    The dual tips definitely provide a classic look without being the same as everyone else with quad tips or a single exit. It sounds great if you’re looking for some extra volume and drone but not wanting to be racing exhaust loud. 10/10 recommend. Definitely install with a friend to make sure rear mufflers are even and level before tightening all of the bolts down.

  2. Sounds great

    By FreakyT December 4, 2022

    I got this exhaust because I didn’t want to have the same tomei or quad tips like everyone else. The dual tips look great and it sounds amazing. Very happy with this exhaust

  3. Love it

    By Perfect Hybrid September 30, 2022

    I absolutely love this exhaust, I am constantly getting complaints on the sound and I like that it’s not a stock looking quad tip. Fast shipping, great packaging, easy install. I did this in my driveway on ramps and jack stands. Great product for sure recommend for FA20 owners.

  4. Invidia N1

    By Perfect Hybrid September 19, 2022

    Installed on a 2016 Stage 3 WRX and I love the sounds. I had an exhaust delete before and was tired of how loud it was and the tin can rattle the exhaust delete’s sometimes have. This is amazing no Droning no issues with install and crazy fast shipping. 10/10 recommend!

  5. Very pleased.

    By Dylan November 10, 2019

    Exhaust shipped fast and went on with ease, a good humble sound on the FA that gives off a sporty note and no scratches in the high rpm. Worth every penny.

  6. Good All Around

    By Daniel April 17, 2019

    I was very pleased with this exhaust. It's not super loud and doesn't drone on the highway, but still has a great exhaust note. I ran with this for three years before changing things up and never had a problem.

  7. Great Quality & Sound, SUUUUUPER HAPPY

    By Kyle October 15, 2018

    Ok, I read a lot of reviews and watched a lot of videos on this exhaust before I bought this thing along with scrolling through forums. I tried to look up a comparison of this exhaust (Dual N1) compared to the R400 Exhaust, I couldn't find anything. Let's start off with the installation, it was pretty easy once you get the stock OEM parts off the car. The hangers sucked to get off bad, recommend using some silicone spray to loosen them up. I bought the GrimmSpeed Donut and OEM downpipe to 3" exhaust gasket worked out great. Overall Installation was easy if you are able to jack up the car high enough to create some space! Sound: This thing sounds sick, the videos on youtube don't do justice really. It's not loud at idle (which is not bad) it's loud when you get on it and rip through gears, it has a nice feel in the backend of the car so it actually feels nice to drive. The stock exhaust didn't really feel like it had much going on maybe a hint of sound but this thing you can feel on your ass int he seats... As far as Performance: Everyone says this thing won't give you performance gains without replacing the downpipe, I kept my stock exhaust and I can feel a difference. My peak boost before replacing the exhaust was about 18.3 , after swapping the cat back I am now bossing at 22.6, the feel is more powerful and hearty when pressure is built up. I feel like the overall driving experience from OEM to this Performance Exhaust was what I needed to feel complete. I wanted to get into the stage 1 and 2 deal with the car but I don't wanna rely on e-tunes or paying a bunch for a dyno so I think overall replacing the catback , and swapping my shifter to a short throw (the rest of the car is stock) the car feels great. SUUUPER HAPPY

  8. Best Sounding exhaust for the FA motors!

    By Justine April 4, 2018

    I got the normal shipping and the box was at my door the next day. I also ordered the Indivia catless J pipe. The exhaust brings out the Subaru rumble in the FA motor that some didn't know was still there. The exhaust went on smoothly. I'm glad I went with this exhaust over any other.

  9. Amazing Product

    By Thomas June 30, 2017

    I could not be anymore more happy with my purchase. This exhaust is the perfect building block to my STI. I am very excited to continue to use Invidia products has my next purchase will be their catless downpipe.

  10. Must have exhaust

    By Travis January 21, 2017

    This exhaust is a beast! I was more then thrilled on how easy the install was, just a few bolts and hangers. The quality of the welds was also very impressive considering I'm a welder as well. The sound will put a huge grin on your face. A greta tone and doesn't drone when going highway speeds. Great performance as well I definitely recommend this exhaust.

  11. Great Product!

    By Eric September 18, 2015

    Nice deep sound, the exact tone I was looking for. Loud but not obnoxious, so I opted to keep the provided silencers out. Installing was very straightforward, however removing the old exhaust was a little troublesome. No issues with the fit and was an easy/direct install. A+

  12. Excellent catback!!!

    By milan July 19, 2015

    Installed this to my 2015 wrx. The installation was pretty easy, everything fits perfectly. Took me about an hour to finish the job. The sound is pretty nice, it has that deep mellow sound. I highly recommend this product. Thanks subispeed for the great customer service.

  13. Good quality, Fast shipping

    By Kevin July 10, 2015

    The difference between this exhaust and the stock is night and day. Much throatier than the stock and not too loud to where you're worried about pissing anybody off. Included in this package were the silencers which i was stoked to find out. Easy to install, great quality and Subispeed was quick to ship as always.

  14. Perfect exhaust for the Subie

    By Efrain May 19, 2015

    The exhaust is amazing. Not as loud as I thought it was going to be but it definitely makes a difference. The exhaust fits perfect on the car. I bought the grim speed adapter and Perrin hangers. When adjusting the exhaust I found it best to put the entire exhaust up and work your way from the back of the car to the front where the cat is. I am not giving it a perfect rating because my box was severely damaged as well as my exhaust tip on the driver side.

  15. Amazing Product and Fast Shipping

    By Mark April 21, 2015

    Installation only took about an hour. Everything fit perfectly. This exhaust is a piece of art and it is even better when you get to hear it! I strongly recommend this product for anyone in the market for a cat back exhaust. Look no where else. Thank you Subispeed!

  16. even a bit of burbull

    By james April 20, 2015

    Installed this on the 15 wrx. It fit perfect to the turbo back j pipe from Cobb and the tone is even nicer then what you hear on the video with the turbo back. A bit of drone far less then stock. It's loud..... quiet if you hold in 4 5 or 6. Any Excell and it's there all around you. The kind you will love.

  17. Good Quality Good Sound

    By Andrew February 14, 2015

    This is my first system from invidia and I can say that it wont be the last. Its hard to find any flaws with this exhaust system. Without the silencers its about 3-4x as loud as stock but its not obnoxious. Went straight in in less than a half hour and it fits nice and tight. Much respect to invidia.

  18. Great Product/Fast Shipping

    By Michael December 2, 2014

    This is a very mellow deep sounding exhaust. No drone and smooth sound all the way through the rpm range. The quality is great as to be expected. Easy install about and hour everything meets up perfect. From 1-10 vs stock exhaust loudness i would give it a 4-5 over stock. Oh and great service from Subispeed as always keep up the great work.

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