Ford Focus ST Cat-Back Exhaust System

$ 799.00

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Product Code: 591100

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Part of the COBB Stage 3 Package, our 3" Stainless Steel Dual Tip Cat-Back for the Ford Focus ST is a direct replacement cat-back exhaust that boasts full 304 stainless steel construction, custom inline mufflers, and dual 4" double wall tips, resulting in a unique exhaust note. Perfectly tuned out of the box with the Accessport and ready-to-run with easy installation!


The COBB 3" Stainless Steel Dual Tip Cat-Back for the Ford Focus ST is a direct replacement cat-back exhaust that boasts full 304 stainless steel construction, custom inline mufflers, and dual 4" tips resulting in a unique exhaust note.

Ford Focus ST Cat-Back Exhaust System
  • 3" 304 Stainless Steel
  • Dual 4" Slash Cut Double Wall Tips
  • Custom Inline Mufflers
  • CNC Mandrel Bent Tubing
  • Tuned out of the box with the Accessport.

Customer Photos

Ford Focus ST Cat-Back Exhaust System is rated 4.7 out of 5 by 43.
Rated 5 out of 5 by from Great sound, perfect fitment I bought this for my '13 ST3 for a little more "audible character" than it had from the factory. I've installed several other aftermarket catback exhausts from different manufacturers on previous vehicles I've owned, and this was by far the easiest, quickest, best fitting product I have ever used. The exhaust arrived much sooner than I expected - the website said it was a 2-3 week backordered item when I ordered, but it arrived on my doorstep less than a week after I ordered. The welds are beautiful, and the piping runs dead center down the stock exhaust channel. The tips were easy to center. I am definitely happy that I decided to go with Cobb!! I'll be back for a downpipe soon...
Date published: 2015-12-05
Rated 5 out of 5 by from Piece o' Cake for 2015 ST Fits the 2015 ST and is an EZ Install. It takes longer to unpack it, get set up than it does to replace the exhaust. I didn't need any hanger pliers as my car is only a month old. I had to bend some heat shield out of the way (and back) when fitting the pipe over the rear axle. The actual work took less than 20 minutes. My 8-year old son helped my out with fitment and the awesome test drive!
Date published: 2015-05-11
Rated 5 out of 5 by from High quality! Sounds so good! Extremely high quality. Install was very simple on my 2016 ST. Nice deep tone on start up (wouldn't call it loud). Does NOT sound "ricey" at all. It is not obnoxious when driving through the neighborhood (so if you are worried about waking everyone up....fear not). Once you get out of the neighborhood and slam on that right pedal... well yea you are definitely going to hear it! In all seriousness this is a great sounding system. Again, I would not call this "obnoxious loud", but you it gets pretty loud when you want it to (in a good way). Very very little drone. On the highway, unless I am really accelerating hard, it's pretty quiet. In my opinion, this is one of the best sounding systems for this platform!
Date published: 2016-07-05
Rated 5 out of 5 by from Great quality, addicting sound! This exhaust system is by far the best quality system I have found for the Focus ST. Flange connections make sure the joints don't leak, full stainless steel, and a simple installation. When they say drone free, they really mean it! And when your on the throttle, your treated to an awesome low end tone! The sound is truly addicting, and very pleasing to your ears. I'd recommend this system to any ST owner, I truly believe its second to none. Well done Cobb, WELL done!
Date published: 2014-06-11
Rated 5 out of 5 by from Awesome sound I could not believe the difference this exhaust made for my Ford Focus ST. Great sound, weight reduction from the stock system and high flow added some horsepower I believe. While I did not put on the system, I could see how someone mechanically inclined could easily put this system on. The tips look amazing compared to the weird trapezoid shaped stock system. Coupled with the Cobb cold air intake and rear motor mount, my ST is a hot little hatch now. I plan to add more Cobb products in the near future.
Date published: 2016-10-20
Rated 4 out of 5 by from Makes car more special. I've had this cat back installed for about two weeks now and I have no complaints about its performance. It doesn't drone when cruising, it's deep and loud enough when you want it to be, but it won't annoy your neighbors when you're just driving around town. Great sound! Also, super high build quality. Zero fitment issues.
Date published: 2014-08-18
Rated 5 out of 5 by from COBB Cat-Back Exhaust is AWESOME! The quality, look, fit & finish of this exhaust system is second to none! And the exhaust note is just perfect. Another great product from COBB!
Date published: 2014-04-23
Rated 5 out of 5 by from Beautifully made system, looks awesome, fantastic welds Ordered this at back and it arrived within a week to Australia, super quick delivery. Opened the box to find a beautifully made system, little bit of automotive P*&n right there. Fitted to the car behind a 200 cell cat. Nice deep note at idle, a little loud around 2200rpm, tends to resonate through the whole car but once past that point it emits a beautiful 'buzzy' note. WOT has this car singing, not sure just how compliant it is for Australian ADR's but the sound is quite controllable. Installed stage 3 tune at the same time (added cat too) the ST is now a weapon pulling hard right through to redline. Thanks COBB.
Date published: 2017-12-10
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