Steeda S550 Mustang GT 3" Cat-Back Exhaust System 5.0L Coyote- 304 Stainless (2015-2017)

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$127.50 (9%)
This Steeda 2015-2017 Mustang Cat-Back Exhaust System is constructed from 304-stainless steel for better than OE equivalent corrosion resistance. Design provides maximum horsepower due to the oversized 3" and the best flow and sound without annoying dron
Part Number: 555 3615
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Steeda is proud to introduce our new 3" diameter Cat-Back Exhaust System for the 2015-2017 Ford Mustang Fastback GT. We have designed this system to bring out the performance in your American made muscle car. Our cat-back exhaust design provides maximum horsepower due to the oversized 3" tubing diameter and the best flow and sound without annoying drone.

This Steeda S550 Axle-Back Exhaust System is constructed from 304-stainless steel for better than OE equivalent corrosion resistance. The tips of our Steeda 3" cat-back exhaust are constructed from polished 304-stainless steel and are embossed with Steeda's signature Sidewinder logo.

The installation of this Cat-Back Exhaust System takes only 2-3 hours using common hand tools.

If you are serious about making power, this Steeda S550 Mustang Fastback GT Axle-Back Exhaust System delivers. The 3" diameter flows adequate whether you have a few add ons or a full blown power adder. Our exhaust kit includes necked down adaptors for a factory style connection to OE converters.

Note: Fits fastback coupe only, will not fit convertible models.

Product Benefits:
  • Adds deep muscle car tone
  • Great daily driving volume with no drone
  • 304 stainless construction provides OE or better corrosion resistance
  • Maximum horsepower with simple bolts ons as well as full on power adders
  • Compatible with most full tube headers
  • 4" diameter chrome tips

CA Residents: Cancer and Reproductive Harm WARNING

Hi everybody Brian from Getting ourselves outside the studio. Having some fun, testing out our new 3" exhaust for the S550 Mustang. That's what we're talking about! Our Steeda 3 inch exhaust, is 3 inches all the way through. It's designed for freer flowing and manufactured out of T304 Stainless Steel. So it's going to be corrosion resistant for the life of the exhaust. Now we have built this exhaust to be effective for both naturally aspirated applications and supercharged applications like this Roush equipped S550 Mustang. Just like with our axle-back systems, we've designed our cat-back system to have an aggressive tone. So free-flowing and aggressive tone means, a lot of fun for you! We're going to take you out here in a few minutes and show you exactly how this sounds. Alright, That says it all! I don't need to say anything more! If you have any questions or comments about this exhaust Please post below. If you enjoyed the content of this video click like and share with your buddies and other enthusiasts. For more information about the exhaust, be sure and visit and don't forget to follow us on social media. Thank you and have a great day!
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Fitment & Features


Manufacturer: Steeda Autosports

Installation Information:

Level of Difficulty: Medium
Install Time: About 2 Hours
Tools Required: Basic Shop Tools, Jack, Jack stands, Safety glasses, Gloves
Print Instructions: Installation Instructions

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017

Customer Reviews

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the steeda catback system is made of very good quality and fitment was perfect. no drone going down the highway but comes alive when you hammer it. installed in 1 hour . highly recommend the system any one with 2015 thru 2017 gt
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from muskogee on 6/19/2020
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