Subaru WRX / STI SS 3" Cat-Back Exhaust

$ 700.00

Availability: Ships in 24 hours
Product Code: 512100

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The COBB catback exhaust does not deviate from the factory emissions equipment and conforms to the SAE dictated 95-decibel exhaust noise level limit enforced by California, as well as other states in the US. This system is modeled after the stock exhaust fitment locations, therefore making it an easy direct bolt on item inclusive of all needed gaskets and hardware.


The COBB Tuning catback exhaust is heralded often for its quality, performance, and subtlety. Engineered to be a vehicle specific unit, the catback exhaust uses the highest quality stainless piping and a muffler designed for direct and efficient flow of exhaust to achieve the highest performance while still retaining a stock like appearance and sound level.

Subaru WRX / STI SS 3" Cat-Back Exhaust
  • Straight-through Optimum Flow Design
  • 304 Stainless Steel for Corrosion Resistance
  • TIG Welded
  • Impressive Sound
  • Complies with SAE 95db Requirements

Customer Photos

Subaru WRX / STI SS 3" Cat-Back Exhaust is rated 5.0 out of 5 by 7.
Rated 5 out of 5 by from RE: Cobb catback exhaust SS 3 I just bought the item last weekend and the next day, I called the customer service to confirmed the item I ordered. Thank you ANDREW F. for shipping the item so quick and I got it the next day instead of 7 days waiting time. I love the cobb catback installed on my subie. I really recommended this company. HIGH END PARTS and I really satisfied with their customer service. THANK YOU AGAIN....
Date published: 2014-04-23
Rated 5 out of 5 by from Perfect I've had this exhaust for the last month. I commute every day to work and have a 1 year old so super loud and drone were out of the question. This exhaust is awesome. Perfect sound with no drone. I can hear it but nothing like some of the other exhausts for the Rex. Sounds awesome at WOT.
Date published: 2014-04-23
Rated 5 out of 5 by from Sounds Sooo Goood Installed this on the 2018 WRX. Everything about this exhaust is true quality. The welds are perfect, the fitment spot on. Did it in the garage by myself in about an hour.(Silicone the hangers and take them off the factory hanger instead of the exhaust. No tools needed just pulled them off and slid back on). I like low profile so Resonated was the way to go for me. If your only doing Cat Back and want to be heard do Non-Resonated. I have the J Pipe and Hi Flow Cat sitting in the Garage waiting for a Turbo stud kit( just in case). I'm sure their going to hear me too.
Date published: 2019-04-10
Rated 5 out of 5 by from Amazing sound Hello from Russia, Moscow. I installed on my STI my05 this exhaust with. A quiet ride beats on the ears, but if you depress the accelerator pedal to the floor, the sound is incredible, and if you go in the tunnel - breath-taking! thank you!
Date published: 2015-01-19
Rated 5 out of 5 by from Wow! Being a veteran with sensitive ears, finding out that Cobb provided a cat-back exhaust that keep it quiet on the inside of the car but offer great sound on the outside. Easy to install with no problems.
Date published: 2017-12-20
Rated 5 out of 5 by from nice nice business and its worth it good tune nice product
Date published: 2015-05-24
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