Cat-Back Exhaust Resonated System for 2011-15 WRX/STI Sedan


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PERRIN Quad Tip Catback Exhaust System

We worked hard to design a system to meet the demands of our clients and fit the back of the newest Subarus. After many months we feel that perfection has been achieved.

3.5" Slash Cut Tips

An over-sized 3.5" slash cut exhaust tips add an aggressive look to this impressive system. PERRIN exhaust tips are a high polished, single wall construction and will not dis-color with extreme heat.

304SS 3" tubing

PERRIN Performance exhaust systems are made entirely of 3" Diameter 304 stainless steel, inside and out. 304SS provides high corrosion resistance, and is excellent for extreme heat up to 1800 degrees. Other manufactures and OEMs, will use cheaper 409 stainless steel which will rust and corrode over time but the added expense of 304 stainless steel is well worth the beautiful and long lasting high polish, and durability.


PERRIN performance exhaust systems features high tech v-band clamps for a perfect exhaust connection. V-band clamps are designed to hold hundreds of pounds of pressure and do so without the need for a gasket! This connection allows for a precise repeatable joint with the ability to rotate each joining connection. This allows for easy installation, and alignment adjustments for a perfect fit every time.

Adjustable Y-Pipe

Our Y-pipe splitter features two slip joints which let you adjust muffler location and tip placement to perfectly sit in your bumper cutouts.


The PERRIN exhaust systems comes with a brushed stainless steel finish.


It is very important to us for our exhaust makes power, but sound level & tone should also be a concern. Our system is designed to have a very mellow and pleasing note while not producing loud "farty" sounds that wakes up neighbors.

Installed Photos

Click on the photo to the left to view a slideshow of this part and other like parts installed.

Lifetime Warranty

PERRIN Performance warrants to the original purchaser, all PERRIN cat-back exhaust systems to be free from defects in material and workmanship. *Some exclusions apply
» Read Full Warranty

Off Road Use Only

This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation.
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Warranty Details

This product features a lifetime warranty Read Full Warranty

Tech Department




Product Weight 52 lbs.
OEM Exhaust Weight 39 lbs.
Material 304 Stainless Steel

Compatibility Detail


2011-2014 WRX Sedan Yes
2015 WRX Yes
2011-2014 STI Sedan Yes
2015 STI Yes


2011 STI Sedan Exhaust

Sound Check


Dyno Charts

2008 STI Stock vs. with PERRIN 3" Catback

In The Box

In The Box

(2) PERRIN Quad-tip mufflers
(1) PERRIN mid-pipe
(1) PERRIN y-pipe
All necessary hardware
(1) PERRIN License Plate Frame


Shipping Information

  • Item Requires Shipping
  • 88.0 lbs.
  • W10.0000” x H20.0000” x L62.0000”

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