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Magnaflow Street Series Cat-Back Exhaust (11-12 V6)

Item 48043
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    Features, Video & Details

    • More Power and Torque
    • Classic Muscle Car Sound
    • Street Series Muffler - Straight-Through Design
    • Durable Stainless Steel Construction
    • 2.5" Mandrel-Bent Tubing
    • 4" Polished Stainless Steel Tips
    • Fits 2011-2012 V6 Mustangs

    Review & Installation Video

    Review & Install Video

    I’m Justin with, and I’m going to be breaking down Magnaflow’s Street Series Catback exhaust for the 2011 and up Mustang V6. The Street Series is a very popular choice with many Mustang owners, thanks to its quality build, aggressive yet refined tone, and baffled muffler design, which makes for some impressive gains over your factory Catback exhaust. Now this kit from Magnaflow utilizes 2.5” stainless steel mandrel bent tubing all the way through those baffled mufflers, and out dual 4” polished tips. Now since this kit does bolt directly up to your factory H-pipe, it should make for a relatively painless install, should take you about two hours. Now let’s hear how Magnaflow’s Street Series Catback sounds compared to your factory exhaust.

    More Power. Give your 2011-2012 V6 the look and feel of a GT with a Magnaflow Street Cat-Back System. This system is dyno-tested and engineered to deliver the signature Magnaflow sound and impressive power gains for your new V6.

    Classic Musclecar Sound. The Magnaflow Cat-Back Exhaust System includes a set of two Street Series Mufflers that feature a free-flowing, straight-through perforated stainless steel core, with stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep muscle car tone.

    Stainless Steel. This premium quality catback is constructed from free-flowing, mandrel-bent 2.5" stainless for superior performance and durability. Finished with dual 4" polished tips, this system looks as good as it performs.

    Application. Made to be a direct bolt on, this catback will bolt straight up to the factory hybrid H-Pipe without any extra modifications required on the 2011-2012 V6 Mustang to give it a deeper, more aggressive sound and improved performance.

    Note: Coupon codes cannot be applied to this product.

    Note. Stock 2011 V6 Mustangs come stock with a Mid Pipe that resembles both the H-Pipe and X-Pipe designs. This hybrid Mid Pipe was created by Ford to help add additional power and sound to the V6 straight out of the factory.

    Fitment: 2011 2012 Details

    MPN# 15591

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Right muffler assembly
    • (1) Left muffler assembly
    • (1) Right tailpipe assembly
    • (1) Left tailpipe assembly
    • (2) clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
    Piping Size: 2.5" Tip Size: 4"
    Muffler Type: Straight-through Fitment: 2011-2012 V6 Mustangs
    Will it fit my Mustang?

      Customer Photos (9) Submit Your Photo

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        Questions & Answers (4)

        4 Top Rated Questions

        Is this exhaust made from 304 or 409 stainless steel?

        • Hi, This Magnaflow Street Cat-Back Exhaust is made from 409 Stainless steel

        Helpful (0)

        Will this work with shorty x-pipes? Will this system work with shorty x-pipes or do I have to get an axelback system?

        • This Magnaflow Street Cat-Back Exhaust (11-12 V6) will work just fine with a shorty X-pipe.

        Helpful (0)

        HP Gains I have a 2012 Mustang V6. Realistically what can I expect to gain in extra HP?

        • It's difficult to say. What other bolt ons do you have? Elevation? Driving habits? Definitely you'll gain HP, my estimation at least 10. Less restrictive, you'll also notice better MPG, performance and of course- SOUND!

        Helpful (0)

        Does this fit the 2013 V6?

        • Magnaflow actually made a version of the street catback specifically for the 2013 V6 that fits perfectly. Check out the link below!!

        Helpful (0)
        Post Your Question

          Customer Reviews (18) Write a Review

          Overall Rating 4.3

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$100-$250

          • Loudness / Volume 4.117647 4.1
          • Exhaust Note 4.705883 4.7
          • Fit & Finish 3.823529 3.8
          • Bang For Your Buck 4.058824 4.1

          • 3/5

            Installation Time: Less than 1 Hour

            February 21, 2018

            Great sound, horrible fit

            I love the sound but it doesn’t fit very well. One of the tips are off to the side. It took a lot of adjustment and tightening of the claps just to get it to stop rattling. I would honestly recommend you chose another exhaust unless you don’t mind paying to have the hangers cut off and moved. Like I said it sounds great but it’s not worth the money for something that doesn’t fit correctly.


            Year: 2012 Submodel: V6

            Helpful (6)

          • 5/5

            Installation Time: Full Day

            August 10, 2017

            Great Sound

            First thing you need to know. You can't put this on with a simple car jack. You will not have enough room to work. I have mine with the Long Tube BBK Headers with the Catted Off Road Mid Pipes. After putting all of these plus the Magnaflow the car felt way more powerful plus sounded like a beast! Couldn't be happier.


            Year: 2012 Submodel: V6

            Helpful (6)

          • 4/5

            Installation Time: Afternoon

            June 18, 2017

            Sound better in person, but some gripes.

            First I feel it was money well spent. So far I only have a catback and tune and it sounds amazing. It doesn't sound like a v8. It sounds like a clean mean v6. The tips are very nice looking. Complaints are the exhaust hangers do not line up very good at the bumper. The left side sits perfect and the right side might need to be rewelded as it is pushed to far to the left and up against the bumper which makes the car rattle like a bucket of bolts. I manhandled it to bend the hangers a little which moved it about 1/8" off the bumper to stop the rattling. You will also need 2 1/4" band clamps as none are included.


            Year: 2011 Submodel: V6

            Helpful (7)

          • 2/5

            Installation Time: Afternoon

            April 04, 2014

            Poor Construction

            Once the exhaust was on it sounded great. However getting it on was an issue. The welded hangers, weren't welded on straight. The passenger side was welded at in inward angle and the drivers side wasn't welded on at a ninety degree angle. It took an extra hour or so to just adjust the hangers themselves. I expected better craftsmanship them that. I actually had to a cut a part in order for them to attach on. Sound is good, quality not so good.


            Year: 2012 Submodel: V6 Boston, MA, USA

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            June 04, 2013

            Easy to Install, Sounds Great

            It was harder to get the OEM exhaust out than it was to put the Magnaflow stuff in. I had originally installed Pypes mid-mufflers into the OEM pipes, and hated the sound (plus the muffler shop that did the welding really did a terrible job, and the system had a rattle in it that was driving me bonkers. It also sounded like a Honda to me at WOT. Then I installed some BBK long tube headers, and that made everything behind the x-pipe sound even worse. Combined with the BBK headers, this system has a great sound. Since the tips are resonator tips, I didn't need to install my Vibrante resonators at all. My only complaint is that the tips hit the top of the exhaust opening. I'm going to take it to a muffler shop and have them do a better alignment on it. Install note - I had to install the driver's side front muffler hanger onto the muffler and then install the assembly into the car. It was easier this way. I gave four stars for bank/buck because I think the system costs too much (actually all cat-back AND axle-back setups cost too much). Once again, the sound is awesome.


            Year: 2012 Submodel: V6 San Antonio, TX, USA

            Helpful (8)

          • 1/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            April 22, 2013

            Rattling and squeaking issues

            I like the tone of this exhaust. Outside of that I am not satisfied. If you want to get an aftermarket exhaust get it done at a shop and have them get the part. In my case, I purchased from American Muscle and had a mechanic shop install the exhaust. After a few months, the exhaust began to rattle and squeak when driving over bumps. I have since taken my car to Ford three times and had them try to fix it. I paid the same install price a SECOND time to have Ford align the exhaust. Now, after getting my car back today Ford tells me that there is an issue with a sleeve/clamp continually loosening. They recommended contacting the manufacturer. The problem is obviously the exhaust unit. However, it will cost me hundreds to have Ford or any shop take the unit off and either put on a new Magnaflow exhaust or my old exhaust since the part was not purchased through them. I love American Muscle. They have great prices and free shipping. However, I cannot see myself getting a large part like this again online. I now have a $700 rattling/squeaking exhaust (excluding the hundreds I paid for install/reinstall). I have spent thousands at American Muscle and I wish I could get a refund. I cannot afford to pay to have the old exhaust taken off and a new one installed. In summation, I would not purchase this large part again.


            Year: 2011 Submodel: V6 Chagrin Falls, OH

            Helpful (10)

            • Response from AmericanMuscle

              The Ford shop who recommended you contact the manufacturer was correct. Magnaflow has a lifetime warranty on their exhaust and they would be able to ship you out the necessary clamp to correct the problem. You wouldn't need an entirely new exhaust. Their phone number is 1800-824-8664 and are open M-F 7:30-5p PST. If for whatever reason they can not help, please give us a call and we'll get this taken care of for you!

              Lisa, Customer Care

          • 4/5

            Installation Time: Less than 1 Hour

            April 17, 2013

            Great sound!!

            Great sounding muffler. I have the bbk LT headers and an off road x-pipe and it sounds just like i wanted. It is a little raspy on the high rpm range but I believe that is the off road x-pipe. The fit and finished is good but the mufflers sit a little high. I might need to do some modifying to the hangers to get them to sit in the right place. Other than that everything was great. It was about an hour of work with a lift.


            Year: 2012 Submodel: V6 CA

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            November 27, 2012

            With bbk headers and catted x pipe

            They sound exelent i recomend it for this combination sounds great and increas in hp and whp


            Year: 2011 Submodel: V6 San Juan, Puerto Rico

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            October 14, 2012

            What stock should sound like...

            First the install, like Fuel said in his review, a lift would be ideal but it can be done with a floor jack and two good jack stands. I had to put the jack stands on the highest setting and barely got the stock exhaust pipes out. The install was easy and straight forward, but ensure that the mid pipes are positioned properly or else when tightening the clamps it will cause your mufflers/tips to not line up with the cutouts in the rear bumper properly. This happened to the passenger side and we had to use a few washers to lower the rear hanger for proper fitment. As far as sound and performance, this exhaust sounds great. At start up it sounds nice and then quiets down to almost stock level after the car warms up. At cruise it is barely louder than stock, however punch and it sounds awesome. Definitely no popping or annoying ricer sound, only a nice growl. As far as performance, I think it might have added some power paired with the Airaid intake that I previously installed. Overall, I'm extremely happy with the exhaust and would definitely recommend it to anyone who wants an exhaust thats louder than stock but not annoyingly loud with decent performance gain. Should have come from the factory this way.


            Year: 2012 Submodel: V6 Central Florida

            Helpful (10)

          • 4/5

            Installation Time: Afternoon

            August 28, 2012

            Love the sound, but

            The fit is not perfect. The shop had to cut the hangers and re-weld them as there was no way to have a gap of 1/2 inch from the plastic rear-end. Maybe i happen to have a bad batch, who knows. Also, the pipes after the cat, are AWEFULLY close to the axle, be careful to angle the pipes correctly as they will rattle against the rear axle. Otherwise, the sound is great, the tips look great. They are quiet while cruising, but can get very expressive when pressing the gas pedal. Perfect for me. They won't crackle/pop until you do the full headers (BBK LT)


            Year: 2011 Submodel: V6 Austin, TX, USA

            Helpful (8)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            June 30, 2012

            Deep Tone

            The Magnaflow Street Catback Exhaust gives my car a great deep tone roar. I really happy i got it and was good price thanks to american muscle. It aslo has a nice shine to the muffler tips at the back of my mustang. It isn't to loud as the Borla ATAK but it meets my sound level. Compare to the stock mufflers i had taking a few pound off with the magnaflow mufflers. They are freeflow mufflers so i can see a bit power increase. As for when just cruising there is a bit of droning but crank a little music and you wont hear it at all.


            Year: 2012 Submodel: V6 nj

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            June 25, 2012

            Worth Every Penny

            Everything about it is great. The shipping was quicker than I expected and the exhaust looks great! What really suprised me me was the engraving on the tips which look awesome. The only problem I have is that the bigger tips are right up against the bumper causing a rattling which is annoying but that might have to do with the installation. Definetly worth the money and the power gain is definetly noticeable. The sound is way better than the stock exhaust. The video doesn't show how good it really sounds.


            Year: 2011 Submodel: V6

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            June 09, 2012

            Amazing MagnaFlow Exhaust

            Wow! This exhaust is perfect for someone who doesn't want an annoying, droning exhaust. It sounds really good and was really easy to install. Just make sure you have a jack and a couple stands. I am very glad I purchased the street exhaus over the competition. My friend has the competition series on his 11 v6 and many people agree the street sounds better. The street is not as loud but the tone by far is better. If you are stuck between the street series or the competition series like, I was, I would really recommend getting the street series.


            Year: 2011 Submodel: V6

            Helpful (7)

          • 4/5

            Installation Time: Afternoon

            May 26, 2012

            Nice Exhaust thats not overly loud

            The magnaflow street exhaust is a good choice for someone who wants an exhaust note that sounds better than stock, but is not overly loud and won't attract any unwanted attention (from the fuzz). Install wasn't too bad, I did the install with the help of a friend, and it probably took about 4 hours. Having a lift is not a necessity, but it would definitely help cut down on the install time. I used a heavy duty jack and 2 jack stands and I was able to get the over axle pipes off, but you need to jack the rear of the car up pretty high or else you wont be able to twist them out( probably 18 inches or so). The hardest part was getting the factory mufflers out. Make sure you have some wd-40 and a rubber mallet to knock the stock axlebacks free. After the stock pipes were free, the magnaflows went in without much effort. In my opinion going with the full catback system is the only way to go. It increases the diameter of the piping from 2.25" to 2.5" for less back pressure, and helps cut a few pounds from the car (the stock exhaust is noticeably heavier than the magnaflow system). Also I noticed after removal that one of my stock pipes was squished a bit (which is bad for exhaust flow) After the install, I was very excited to start up the car to hear the difference. It now has a nice deep rumble. Its quiet when driving with a light foot, but when you punch it you can hear a nice throaty roar. (drive with your windows down and you will definitely hear it.) There is a tiny bit of drone in the 1.5k-2k rpm range, but not unbearable like I've heard from those who have the competition version of this exhaust. Just turn your radio up a bit and you wont have a problem. The only downside I've found with this exhaust is that the tips pretty much touch the rear bumper cutouts for the tail pipes, causing the rear bumper to vibrate, which causes my rear license plate to make an annoying noise. I fixed this by adding 2 more screws in the lower part of the license plate bracket. I'll probably play around with the exhaust this weekend to see if I can get it to hang a bit lower to stop the vibration of the rear bumper, but after adding the 2 screws the annoying sound is gone. Overall, I am glad with my purchase.


            Year: 2011 Submodel: V6 Chicago, IL

            Helpful (8)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            April 27, 2012

            Great Tone/Not overly Loud

            Hey guys, this is an easy install but beware. I had the car on ramps and there was not enough clearance to get the straight pipes around the rear axle and off the car. You need a lift. So, don't do what I did and get all the way to the straight pipes only to realize you can't continue because the car is not on a lift...otherwise these sound great and I can feel a difference in the top end. I hate the loud, obnoxious, headache inducing exhausts that are on the market and this is certainly not one of those. Great tone, NO DRONE WHAT-SO-EVER. If you want a sexy sounding exhaust, and not an annoying one, get this.


            Year: 2012 Submodel: V6 Tucson, AZ, USA

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            March 15, 2012


            I will start off by saying that this system surpassed my expectionations by a mile! After weeks of research i kept coming back to this product and could not be happier with my purchase. The loudness level is exactley what i was looking for a nice loud muscle car roar, that is deep and throaty. Ive heard some of the "loud" versions of systems such as the Borla ATAK series and in my opinion it sounds like its trying way to hard to sound "bad a**" this system just delivers! As well as volume the exhaust note is perfect, like i said deep and throaty. You loose that annoying hallow sound of the stick system....and the best part is there is NO drone that i have experienced when cruising. Really blew me away that they were able to achieve the best of both worlds. The fit and finish on this is also incredible. Top notch materials and parts that required no tweaking at all for install. The tips look amazing, larger than stick and really fill out the bumper cut outs to give it that aggresive and finished look. As for power gains it is hard for me to say because i installed an Airaid CAI at the same time. I will say the combo of the two makes your v6 jump right in there with the V8's. VERY noticable power gains throughout the whole spectrum. So overall if your looking for an aggresive deep sounding exhaust that will deliver good peformance gains, than look no further!


            Year: 2012 Submodel: V6 Philadelphia, PA

            Helpful (6)

          • 5/5

            Installation Time: Shop Install

            March 05, 2012

            Worth it car runs better at lower RPM's

            the Exhaust makes car run smother & gives it a not over welmen loud, but you can diff here it.......


            Year: 2011 Submodel: V6 Orlando, Fl

            Helpful (5)

          • 5/5

            May 31, 2011

            Magnaflow catback

            Absolutely fantastic exhaust! Low end power improved greatly. Very nice sound. I am happy with this exhaust as my purchase over borla and flowmaster.


            Year: 2011 Submodel: V6

            Helpful (17)

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