Fujitsubo Authorize RM Cat Back Exhaust

2015-2020 Subaru WRX & STI

Ships for free in the 48 states

SKU: 270-63111We price match!

In Stock

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The Fujitsubo Authorize exhaust systems has been designed for increased vehicle power and response while providing and improved exhaust note at reasonable volume.
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Fujitsubo Authorize RM Axle Back Exhaust

This is a racing spec series muffler designed with the best combination of weight reduction and sports performance as priority. It produces a high level sports sound and reduction in weight through the use of compact silencer and excels in performing throughout the mid and high rpm power band.

Right side single tip exit. See Fujitsubo's cover in the related parts section for a clean left side exit delete.


  • Material: 304 Stainless Steel
  • Model: 270-63111
  • Cat Back
  • Pipe Diameter: 70mm
  • Tip Diameter: 99mm
  • Authorize RM Weight vs OEM: 25.6 vs 49 lbs

NOTE: Gaskets and hardware included.

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4 customer reviews

Average rating
(based on 4 reviews)
Ease of Installation
Fit / Quality
Overall Satisfaction
  1. About the same volume as the stock. Single tip looks great.

    By wtxing1206 September 17, 2019

    The sound is deeper in the mid range. At lower rpm it’s more refined and even quieter than the stock exhaust. Overall the volume doesn’t change much compared to the stock. The tip looks larger in person than in the picture which is nice. As of performing I really wasn’t expecting much from a catback but I do feel a little (maybe it’s just my imagination) different than before. I’m satisfied with the looks. And I wish it could be just a little bit louder than it is.

  2. Awesome

    By evan May 31, 2018

    Exhaust sounds great! Just like the comments above really makes the car sound nice. Installation was really easy. If you have an OEM downpipe, make sure you get the adaptor!

  3. Perfect Exhaust!

    By Stephen July 8, 2017

    This exhaust is amazing! I had my buddy with his STI STP exhaust with me and we agree that its slightly louder than the STP. Zero drone, beautiful product and sound. A very adult exhaust.

  4. 10/10 would buy again!

    By Jacob April 21, 2017

    Exhaust sounds great! No highway drone whatsoever! Louder than stock at cold start, but about the same at idle. I waited a long time for this to come from Japan and Customs, but it's been totally worth the wait! If you want more rumble, but don't want to go deaf or get a headache: Buy this exhaust!

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