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Perrin Cat-Back Exhaust System - Resonated | 2011-2017 Subaru WRX/STI (PSP-EXT-347BR)
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Cat-Back Exhaust System for WRX/STI Sedans by Perrin Performance
PERRIN Exhaust systems are made entirely of 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. The added expense of 304 stainless steel is well worth the aesthetic appeal and durability.
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. 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. Our Y-pipe splitter features two slip joints which let you adjust muffler location and tip placement to perfectly sit in your bumper cutouts. 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.
It is very important to us for our exhaust to make power, but sound level and tone should also be a concern. Our system is designed to have a low and pleasing rumble while not producing the loud, rough drone that wakes your neighbors!
- 3in 304 Stainless Steel Tubing
- 3.5in Slash-Cut Exhaust Tips
- Straight Through Muffler Design
- V-Band Clamps
- Adjustable Y-Pipe
- Brushed Stainless Steel Finish
- Gains of 8-10 WHP and 8-10Ft-Lbs Torque
- Mellow, Pleasing Tone
- Durable, Long Lasting
- Corrosion Resistant
- WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
- 2011 - 2014 Subaru Impreza WRX Sedan
- 2011 - 2014 Subaru Impreza WRX STI Sedan
- 2015 - 2017 Subaru WRX
- 2015 - 2017 Subaru WRX STI
What's In The Box?
- 2 - PERRIN Dual Tip Mufflers
- 1 - PERRIN Midpipe
- 1 - PERRIN Y-Pipe
- All Necessary Hardware
- Installation Instructions
- Warranty Information
- Perrin Performance 5 Year Limited Warranty
This is a really nice cat-back exhaust. Pros: Great looking quad 3.5 inch tips that look like they belong on the car, 3in 304 tubing, adjustable alignment, and of course more power.
Con: This thing is louder than I expected. Perrin describes this as "mellow," No way! The sound is deep and it drones even with the resonator.
It fit on my JDM 2016 (2017?) WRX STI with the EJ207 and twin scroll turbo. I picked this cat back because of the 4 tips and I am hoping it will fit with other downpipes for twin scroll turbos. It is louder than I was expecting, even with the resonator, and drones at above 2500rpm. The fit wasn't bad and I liked the adjustability but right now one muffler protrudes further than the other and I am not sure that can be adjusted out. My biggest peeve was that the welds were NOT with stainless rods but with carbon steel so corrosion will be an issue further down the line.