Invidia R400 Gemini Cat-Back Exhaust System (2015+ WRX/STI)

$1,101.00 - $1,187.00
(9 reviews) Write a Review

***Backordered with a shipping ETA of 6-8 weeks*** 

2015+ WRX/STI R400 Gemini Quad Tip Cat Back Exhaust System By Invidia


Aggressive sound, high quality for a great value!


  • Piping Diameter: 76mm
  • Piping Material: 304 Stainless Steel
  • Tip Diameter: 101mm
  • Tip Material: Polished or Titanium
  • SUS304 Polished Stainless Steel Piping
  • Mandrel Bent
  • CNC Made Flanges
  • TIG Welded

Note this product falls under our oversized/overweight shipping and return policies.

9 Reviews Hide Reviews Show Reviews

  • 5
    Very good

    Posted by Emiliano Garro on Nov 9th 2020

    One of the best exhaust out there love the sound very clean welding and easy to put in I did it in around 30 minutes

  • 5
    Love this exhaust

    Posted by Alyssa on Sep 9th 2020

    The exhaust was on back order, but came in very quickly. Arrived in great condition. The finish and quality is great. Installation was easy. Looks great in the car, and I love the sound. Very deep, no real droning, pretty mellow at idle and low speed, but loud and aggressive enough under hard acceleration. A very good all around, every day exhaust upgrade.

  • 5
    Invidia R400 Titanium Tips

    Posted by Robin Tse on Sep 7th 2020

    This was a great upgrade from my Nameless Axleback exhaust. Has such a great sound and the Titanium tips look so good on the rally blue WRX. Highly recommend those catback exhaust for those who want a mild exhaust sound and not a obnoxious exhaust. Your neighbors won't hate you.

  • 5

    Posted by Matthew on Jun 24th 2020

    The exhaust sounds really good. It met all expectations and more!

  • 5
    Invidia R400

    Posted by Scott Ide on Jun 8th 2020

    My Series White Sti purred like a kitten stock. Now she roars like a mountain lion.

  • 4
    Quite the change from stock!

    Posted by Eric on Aug 15th 2019

    Stock was way too quiet. This DEFINITELY changes that. There is a bit more drone in the car than I'd like, but it seems to be getting better over the last few days. The box was in rough shape from shipping, but no harm to the pipes at all. Install was super easy and sounds great now. Still adjusting to the volume and the heads that turn now.

  • 4
    Invidia r400

    Posted by Ajbin on Feb 26th 2018

    Exhaust looks and sounds nice. On my concern is Subaru has a flex pipe within the exhaust so there aren't any exhaust leaks and Invidia does not have that on their exhaust kit. Other than that the exhaust kit is awesome!

  • 5
    Best of Both Worlds

    Posted by wrb_t_rex on Sep 3rd 2017

    This exhaust system is simply amazing. Install was relatively simple and straightforward. The exhaust tips are pretty large so I would recommend having someone tighten the bolts connecting the axle back portion to the midpipe while you hold the tips where you want them. The system sounds absolutely perfect at 3K, it's the perfect noise level in cabin and doesn't wake the dead. No drone at all even at highway speeds of 80+ and not even around 1450 RPM during start up (which my factory system had and would shake the entire car). Definitely a good buy for the money if you are looking for some additional sound under acceleration but aren't looking to be heard blocks away.

  • 5

    Posted by K Kry on Aug 30th 2017

    Has a pretty deep tone to it, it sounds really good! Installation was pretty straight forward and the kit includes all the necessary hardware. Right around 3k is the sweet spot for this exhaust, but once you get on it, it gets pretty loud along with some pops. While driving on the freeway it is quite tame going 70 in 6th i don't hear a drone. Overall solid product definitely feel better throttle response as well.