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Magnaflow Competition Series Cat-Back Exhaust (15-17 V6)

Item 390880
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      Review & Installation Video

      Hey, guys. Justin here with with my detailed review of the Magnaflow Competition Cat-Back Exhaust system available for your 2015 and newer V6 Mustang. You should be checking out the Competition Series from Magnaflow if you're looking for a top quality cat-back made from 100% stainless steel and one that's going to provide a very deep and aggressive tone for your V6.Magnaflow's without a doubt one of the best-known names in the industry, and for good reason, guys. They consistently offer great quality, fitment, and tone, and that certainly applies here with the Competition Series. You guys heard the clips already. You know what this thing sounds like. But in my opinion, it's going to be one of the best systems available for the 3.7-liter motor because of how it sounds. It delivers a very aggressive tone, as is the case usually with the Competition Series from Magnaflow, but it's not going to be over the top. In fact, I think it offers some great street manners. It's going to be whisper quiet on the highway, but it's going to turn a bunch of heads when you get on it. So for that reason alone, strong four out of five on my one to five, or one to wake the neighbors scale. Breaking down the materials a little bit further here, with the Competition Series, guys. You are going to find, again, that 100% full stainless steel build throughout, 409 grade to be exact, two and a half inch mandrel bent tubing, including the X pipe here for the mid pipe, straight through Competition Series mufflers again, all exiting out the rather large four and a half inch polished tips etched with the Magnaflow logo. Now I do want to point out I think the four and a half inch tip is the perfect size for the S550 cars. It seems to fill out the holes in the bumper perfectly, without being too big or too small. This system is made in the U.S.A. and is backed by a lifetime warranty for the materials if you should ever need it. Now I do have one small little nitpick here. I would have preferred to see a 304 grade stainless steel, as opposed to the 409 used with this system, especially at this price point. But overall, not a huge deal, and it's certainly not going to affect the performance. The Magnaflow does feature a clamp or bolt on design, meaning no cutting, no permanent modification needed whatsoever. So that's going to make for a very easy one out of three wrench job for you guys. This thing can be bolted on in roughly an hour or two from start to finish using nothing more than a basic socket set. Using the sound clips and my review, hopefully, you guys have a better idea of what to expect with the Magnaflow Competition and if it's the right system for you. Now what I can tell you is that this thing is built extremely well, bolts right up without issue, and delivers one of the best sounds I've heard with a 3.7 Mustang to date. So be sure to learn about the Magnaflow stuff for your ride here at

      Product Information

      Features, Description, Specs & Installation


      • Aggressive Muscle Car Sound
      • Improves Exhaust Flow for More Power and Sound
      • Straight-Through Competition Mufflers
      • Free Flowing X-Pipe Included
      • Durable 409 Stainless Steel Construction
      • 2.5" Mandrel-Bent Tubing - Steps Up From 2.25"
      • Mirror Polished, 4.5" Stainless Steel Tips
      • Direct Bolt-on Replacement
      • Fits 2015-2017 V6 Mustangs


      Aggressive Muscle Car Sound. The 2015-2017 V6 Mustangs ship from the factory with an understated exhaust note for those drivers not looking to attract to much attention. But, when your packing 300 horsepower and 280 ft-lbs of torque under the hood who wouldn't want to attract a little extra attention? A Magnaflow Competition Cat-Back with its straight-through mufflers and a free flowing x-pipe will help unleash all the aggressive muscle car sound that the Mustang's 3.7-liter V6 engine has to offer.

      More Power and Better Performance. A Magnaflow Competition Cat-Back Exhaust not only improves the sound of your V6's exhaust, but also improves its power and performance as well. By reducing back pressure and improving exhaust flow, you will see an increase in rear wheel horse power and torque.

      Magnaflow Quality. Magnaflow manufactures their Cat-Back Exhaust systems right here in the USA with pride. Magnaflow Competition Cat-Back's are mandrel-bent from 2.5" diameter, premium grade, 409 stainless steel tubing for outstanding exhaust flow and enduring corrosion resistance. This system includes an X-Pipe and two high flow, straight-through Competition mufflers. The mufflers feature a pair of mirror polished 4.5" tips that exit in the stock location for impressive muscle car looks.

      Direct Bolt-on Upgrade. Magnaflow's Competition Cat-Back Exhaust with X-Pipe bolts straight up in the stock location with no cutting or extra modifications required. Installation of this Magnaflow Cat-Back can be completed in about two hours with just basic hand tools.

      Application. This Magnaflow Competition Cat-Back Exhaust with X-Pipe is designed to fit both the fastback and convertible 2015-2017 Mustangs equipped with the 3.7L 4V Ti-VCT V6 engine.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 2015 2016 2017

      Magnaflow 19099

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Right Muffler Assembly
      • (1) Left Muffler Assembly
      • (1) Right Over Axle Intermediate Pipe
      • (1) Left Over Axle Intermediate Pipe
      • (1) X Pipe Assembly
      • (4) Clamps

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material:409 Stainless Steel Tip Material :Polished 409 Stainless Steel
      Piping Size:2.5"Tip Size:4.5"
      Muffler Type:Straight-throughFitment:2015-2017 V6

      Customer Reviews (100+)

        Reviews of Magnaflow Exhaust products have an average rating of 4.7 out of 5

          Questions & Answers

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