$7,000 Summertime Mustang Build Enter Now!
Talk to a Mustang Expert
1-888-332-7930
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

Magnaflow Competition Axle-Back Exhaust (15-17 EcoBoost)

Market Price $1,042.93 You Save 32% ($331.84)
Our Price

$711.09

FREE Shipping
  • Item 386418A
  • MPN# 19179

In Stock Ships same business day. Choose options to add to cart

Features, Video & Details

  • Aggressive Muscle Car Sound
  • Stainless Steel Construction
  • 2.5" Mandrel-Bent Tubing
  • 4.5" Polished Stainless Tips
  • Made in the USA
  • Fits 2015-2017 EcoBoost Mustangs

Review & Installation Video

Review & Install Video

What's up, guys? Stephanie with AmericanMuscle.com, and this is my review of the Magnaflow Competition Axle-Back Exhaust fitting 2015 and up EcoBoost Mustangs. The Magnaflow Competition Axle-Back is going to be a good option for the S550 EcoBoost owners out there that are looking for a deep sound and a smooth exhaust tone. I wouldn't call the system quiet, but it's not wild, either. So it's a perfect option for those of you out there looking for something that's in between. It's not a loud and raspy system but it does give a smooth sound to even the EcoBoost which helps to get the sound away from the four-cylinder turbo sound. It's still there, but it's not as import-sounding as a lot of other systems are. This is a full stainless steel axle-back and of course it's mandrel-bent. It's a two and a half inch system with four and a half inch polished stainless steel tips out back as well. The axle-back is designed to be more free flowing and it reduces a little bit of back pressure, and the mufflers are also straight-through muffler design. I always say this but stainless steel's always a great option for the cars that see all different types of road conditions because it offers great corrosion resistance. Like most aftermarket axle-backs, this one's going to open up some of the turbo noise on the EcoBoost. The exhaust has better flow and the turbo noise is going to be more noticeable with the axle-back installed. You can hear the turbo spool and you get a lot of the blow-off noise as well. Overall, this is a deep-sounding system that doesn't have a lot of raspiness and popping to it. It's got some volume to it and it gives a smooth growl. It is just an axle-back, so keep in mind that it can get even louder with a midpipe and headers. That being said, I'm going to give it a solid two or three out of five on the loudness scale for both the EcoBoost and the V6. At the end of the day, though, no matter if you love this sound or hate it, it really all depends on what you're looking for and what you like. And luckily, there are quite a few options out there. When we start to look at price, this axle-back is on the more expensive side of things. It's going to cost between $750 and $800. So it is up there with brands like Borla, but there is still the Ford Racing and Corsa offerings that are most expensive. If this is still out of your price range, there are a ton of other options for the EcoBoost. So you can always check out some of those. You are going to be looking at the typical cut-and-clamp design with the install for this axle-back since you do need to cut all S550 axle-backs. I'm going to call this a two out of three wrenches on the scale but just because of the cutting that's involved. It's nothing difficult, but I just recommend some eye protection and a fresh blade to make the cutting easier. Overall, you're looking at about two hours to get all of this done. A lift would certainly make things easier for you here. The job can be done on jack stands as well if you don't have access to a lift. Cutting the factory axle-back isn't hard. Just be sure to measure twice and plan and mark where you'll be cutting so you won't have a mistake. The new axle-back will come with a new set of clamps. And you don't have to worry about clamping the tips because they're welded on there. When you go to install your new setup, it would probably be best and easiest if you leave everything loose until you have it all lined up and then tighten it down. Overall, the Magnaflow Competition Axle-Back is a two and a half inch stainless steel axle-back that is a great option for those looking for a sound that's in the middle of the road when it comes to volume. It offers a smooth and deep-sounding exhaust tone from straight through mufflers, and it has four and a half inch tips for out back. You can check this axle-back out some more online for yourself. And for all things Mustang, keep it right here at AmericanMuscle.com.

Add Horsepower. Stop denying your S550 EcoBoost Mustang the power it deserves by keeping that factory exhaust system. Enjoy more horsepower and torque with a Magnaflow Competition Axle-Back, by reducing back pressure and giving your Mustang a free-flowing exhaust.

Aggressive Muscle Car Sound. Give your EcoBoost Pony a deep, aggressive rumble by adding this Magnaflow Competition Axle-Back. This premium quality exhaust features free-flowing, straight-through mufflers that increase power and give your S550 an unmistakable muscle car sound.

Magnaflow Quality. Constructed from durable 2.5" diameter mandrel bent stainless steel tubing for its corrosion resistant properties, this Magnaflow Competition Axle-Back features two straight-through mufflers with brightly polished 4.5" stainless tips, that exit in the stock locations for impressive muscle car looks and sound.

Cut & Clamp Installation. The installation of this Axle-Back Exhaust requires cutting and removing the factory muffler assemblies, and clamping the new muffler assemblies in place. Clamps and instructions are provided.

Application. This Magnaflow Competition Axle-back Exhaust system is specifically designed to fit 2015-2017 EcoBoost Mustangs and give it the deepest, most aggressive sound possible.

Note: Coupon codes cannot be applied to this product.

Fitment: 2015 2016 2017 Details

What's in the Box
  • (2) Muffler assemblies
  • (2) Inlet pipes
  • (2) 2.5" clamps
  • (2) 2.25" clamps
Installation Info
Tech Specs
Axle-back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 4.5"
Muffler Type: Straight-through Fitment: 2015-2017 EcoBoost
Will it fit my Mustang?
  • EcoBoost - 15, 16, 17

Most Helpful Reviews

5/5
Wow!

Installation was pretty easy on my brothers new ecoboost, we used a saw to do the cutouts. This axle back brought the car alive! Totally worth every penny.

Helpful (1)

5/5
Great muscle car tone, perfect loudness

I installed this axle-back on my 2016 Ecoboost Mustang Convertible and this exhaust looks great and sounds fantastic. I'd agree with what Stephanie says about the tone and loudness. I was very concerned ...

Read More
Helpful (0)

Overall Rating 5 out of 5 stars
Read All 2 Reviews

Customer Photos

You Might Also Like

2 Questions / 2 Answers

Ask a Question

Is this exhaust on the louder or quiet side? The website says it's loud but in the video Stephanie says it's moderate to quiet. Which is it?

Abdul

  • The Magnaflow Competition Axle-Back Exhaust is considered a louder axle-back exhaust that we carry, however, the overall sound level is mid-ranged. We would recommending listening to a few sound clips of the axle-back exhaust to see if this is a kit that is loud or quieter for you.

    AMJEFF

Helpful (0)

Hey when she says its a straight through muffler design what does that mean? Does that mean that its an empty pipe and i might as well cut the muffler off and i will get the same sound?

15EB

  • Yes and no. Yes to your question on this being an empty pipe, but no to your question on simply deleting your mufflers to achieve the same sound. Just because the mufflers are straight through doesn't mean they didn't design them specifically. The way all straight through mufflers are designed give them all unique sounds. The idea is the straight through design allows for the loudest mufflers.

    JeffAM

Helpful (0)

More Products You Might Like

Customer Reviews (2) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 3 3
  • Exhaust Note 5 5
  • Fit & Finish 3.5 3.5
  • Bang For Your Buck 5 5



  • 5/5

    Installation Time: Less than 1 Hour

    October 09, 2016

    Wow!

    Installation was pretty easy on my brothers new ecoboost, we used a saw to do the cutouts. This axle back brought the car alive! Totally worth every penny.

    Kamm

    Year: 2016 Submodel: Ecoboost

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 20, 2017

    Great muscle car tone, perfect loudness

    I installed this axle-back on my 2016 Ecoboost Mustang Convertible and this exhaust looks great and sounds fantastic. I'd agree with what Stephanie says about the tone and loudness. I was very concerned that the exhaust I chose to buy would be way too loud, but the Magnaflow is a perfect amount of loudness for me. Convertibles have floor pan bracing to add rigidity to the frame due to the removal of the roof. If you have a convertible, make sure the exhaust you choose will accommodate the floor pan bracing. This exhaust fits nicely above the floor pan bracing. However, after an hour or so of driving after installation of the exhaust, the axle-back seems to have shifted slightly to lay on the bracing structures. Now when I drive over certain bumps, the system clanks/rattles a bit, hence the 3-star rating... all the bolts were torqued to the proper specification, too. I'm looking to resolve this issue by loosening said bolts and moving the elbows up slightly so the system is no longer resting on the bracing structures.

    WheelmanM80

    Year: 2016 Submodel: EcoBoost

    Helpful (0)

Related Mustang Categories