Perrin Cat-Back Exhaust Resonated System for 2011-17 WRX/STI Sedan


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Product Description

The 2015-17 WRX exhaust is extremely quiet in stock form. Our resonated exhaust, although not much louder than stock, still provides 8-10 WHP and a much better sounding exhaust note compared to stock.

3.5″ Slash Cut Tips

Over-sized 3.5″ slash cut exhaust tips add an aggressive look to this impressive system. PERRIN exhaust tips sport a more heat-resistant brushed finish compared to the rest of the exhaust system and are of a single wall construction that will not discolor with extreme heat.

Straight Through Muffler

PERRIN mufflers have a true 3″ internal diameter for uninterrupted exhaust flow. PERRIN mufflers and flange connections are 3″ throughout the entire length, not necked down, for ultra smooth transitions throughout the system.

304SS 3″ tubing

PERRIN Exhaust systems are made entirely of 3″ Diameter 304 stainless steel. 304SS provides high corrosion resistance and is excellent for heat up to 1800 degrees Fahrenheit. Other manufactures may use cheaper 409 stainless steel which will rust and corrode over time, but the added expense of 304 stainless steel is well worth it for the beautiful, long lasting high brushed finish and durability.


PERRIN Exhaust systems feature 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 and repeatable joint with the ability to rotate each joining connection. This makes installation much easier 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 system comes in a brushed stainless steel finish.

*Labor estimate is dependent on condition of vehicle. If more work is needed due to other vehicle issues, you will be notified and asked to approve extra charges*


Additional information

Weight 85 lbs
Dimensions 60 × 24 × 24 in


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Competition use only parts are clearly labeled as competition use only in the product listing page and may only be used according to the guidelines posted on our Emissions Notice to Customers in California page