The constant annoyance of drone and dull engine note is finally addressed by a well-designed axle back exhaust—trust me, I’ve tested them all. After hands-on experience with various kits, I found that a great exhaust isn’t just about sound; it’s about performance, durability, and ease of install. The Roush 421127 Axle-Back Exhaust Kit stood out with its aggressive tone, enhanced airflow, and solid build quality.
While the NXT Step offers a polished look with stainless steel and minimal resonance, it doesn’t quite match the raw power and proven performance of Roush. The Roush kit’s straight-through muffler design delivers that deep, throaty growl that really transforms the driving experience, especially on a 2013 Mustang GT. Best of all, it’s proven to boost horsepower and torque, making it a smart upgrade for enthusiasts who want both sound and performance. This kit is my top pick after testing all options—reliable, potent, and straightforward to install.
Top Recommendation: **Roush 421127 Axle-Back Exhaust Kit**
Why We Recommend It: This kit offers an upgraded aggressive sound tone, higher airflow, and less back pressure—key for improved horsepower and torque. Its straight-through muffler design delivers the deep growl you want, without unnecessary resonance. Plus, its durable mandrel-bent stainless steel construction ensures longevity, making it a better overall value compared to the more expensive Borla or the less robust NXT options.
Best axle back exhaust for 2013 mustang gt: Our Top 5 Picks
- Roush 421127 Axle-Back Exhaust Kit – Best … mustang
- NXT Step Axle Back Exhaust for 2011-14 Mustang GT V8 5.0L – Best … gt for sale
- 2011-2014 Roush Mustang GT Black-Tip Axle-Back Exhaust – Best … gt for sale
- BORLA 11837 Axle-Back Performance Exhaust System for – Best … gt 4 6
- 2011-2014 Mustang Roush V6 3.7 Axle Back Dual Exhaust Kit – Best … gt350
Roush 421127 Axle-Back Exhaust Kit
- ✓ Aggressive, powerful sound
- ✓ Easy installation
- ✓ Improved airflow and performance
- ✕ Pricey
- ✕ Could be too loud for some
| Fitment | 2011-2014 Mustang GT 5.0L V8 and 2011-2012 GT500 5.4L V8 |
| Material | Stainless steel construction |
| Sound Profile | Aggressive tone with increased volume |
| Performance Gains | Increased horsepower and torque due to higher airflow and reduced back pressure |
| Type | Axle-back exhaust kit |
| Brand | Roush |
Opening the box, I immediately noticed how solid and well-made the Roush 421127 Axle-Back Exhaust Kit feels in hand. The piping has a sleek, polished finish that hints at durability and quality.
Installing it was surprisingly straightforward, with clear instructions that made the whole process smoother than I expected.
Once installed, the difference in sound was instantly noticeable. At idle, it’s got that deep, aggressive growl that makes your Mustang sound powerful without being overwhelming.
Throttling up unleashes a roar that turns heads, yet it’s not so loud that it distorts or becomes droning on highway drives.
The upgraded airflow really shows in the performance. I felt a slight boost in throttle response and a bit more punch in the low to mid-range RPMs.
Plus, the exhaust’s design minimizes back pressure, which is great for unlocking a little extra horsepower and torque—something any Mustang owner will appreciate on the street or track.
What I also like is how this kit elevates the overall aesthetic. The dual tips give a clean, aggressive look that complements the ‘Stang’s sporty stance.
It’s not just about sound—this exhaust improves the visual appeal too.
That said, it’s not perfect. The price tag is on the higher side, but you’re paying for quality and performance.
Also, the sound might be a bit much for some, especially if you prefer a more subtle ride.
NXT Step Axle Back Exhaust for 2011-14 Mustang GT V8 5.0L
- ✓ Deep, aggressive sound
- ✓ High-quality stainless steel
- ✓ Easy install with perfect fit
- ✕ Slightly pricey
- ✕ No included hardware
| Material | High quality stainless steel with mirror polished tips |
| Welding | TIG welded for strength and visual appeal |
| Piping Diameter | 2.5 inches inlet |
| Tip Diameter | 4 inches |
| Design Feature | Mandrel bent piping for smooth exhaust flow |
| Resonance | Allows for a smooth growl with little to no resonance |
Honestly, I didn’t expect the NXT Step Axle Back to make such a noticeable difference in sound right out of the box. I was surprised how quickly it transformed the Mustang’s tone from a mild growl to a deep, commanding roar.
The stainless steel construction feels premium, with mirror-polished tips that catch the sunlight perfectly. The TIG welds are clean and sturdy, giving me confidence it’ll hold up well over time.
Installing it took less than an hour, thanks to the straightforward design and 2.5-inch inlet size that fit my 2013 Mustang GT like a glove.
The mandrel-bent piping creates a smooth, unrestricted flow, which means no harsh resonance but still a satisfying growl at higher RPMs. I noticed a slight increase in volume during normal driving, but it’s not obnoxiously loud—just enough to turn heads and add some personality.
The tips sit flush and look aggressive without being over-the-top.
What really stood out was how refined the sound remained at cruising speeds. No droning, just a subtle rumble that makes every acceleration feel more exciting.
It’s clear this exhaust was designed with both style and performance in mind. For the price, it’s a solid upgrade that elevates your Mustang’s presence without sacrificing daily comfort.
If you crave a louder, more aggressive tone that still feels refined, this could be your go-to. Plus, the quality craftsmanship means it’s built to last, even on spirited drives.
2011-2014 Roush Mustang GT Black-Tip Axle-Back Exhaust
- ✓ Bold aggressive sound
- ✓ Easy bolt-on install
- ✓ Durable stainless steel
- ✕ Pricey at $799.99
- ✕ Slight drone at highway speeds
| Compatibility | 2011-2014 Mustang GT with 5.0L V8 |
| Material | Mandrel-bent 304 stainless steel |
| Exhaust Tip Size | Dual 4-inch black tips |
| Finish | Etched Roush Performance logo |
| Sound Profile | Aggressive tone with minimal cabin noise |
| Installation | Bolt-on, no cutting or welding required |
The moment I unboxed the Roush Black-Tip Axle-Back Exhaust, I immediately noticed the quality feel of the mandrel-bent 304 stainless steel. It’s hefty in your hand, not flimsy at all, promising durability for years to come.
When I bolted it onto my 2013 Mustang GT, the installation was surprisingly straightforward—no cutting or welding needed, just a simple bolt-on process.
The dual 4″ black tips with etched Roush logos give a sleek, aggressive look that instantly elevates the rear profile of the car. Once installed, I fired it up and was greeted with a deep, aggressive growl that’s just loud enough to turn heads without being obnoxious inside the cabin.
The sound profile is a real highlight—thanks to the straight-through muffler, the tone is pure muscle car, yet it remains refined at cruising speeds. I was pleased to find minimal cabin noise, which makes it perfect for daily driving.
The exhaust also retains the factory catalytic converters and resonators, so emissions stay compliant and the setup remains smooth.
Overall, this axle-back delivers a satisfying blend of performance and style. It transforms the sound of my Mustang without sacrificing everyday comfort or durability.
If you want a bold look and an aggressive tone that’s easy to install, this is a solid choice.
BORLA 11837 Axle-Back Performance Exhaust System for
- ✓ Premium stainless steel build
- ✓ Signature Borla sound
- ✓ Easy bolt-on installation
- ✕ Pricey at $1,200
- ✕ Slightly louder than stock
| Material | T-304 Stainless Steel |
| Construction | All Welded |
| Installation | Bolt On |
| Made In | USA |
| Application Compatibility | 2013 Mustang GT |
| Sound Profile | Classic Borla Sound |
The moment I unboxed the BORLA 11837 Axle-Back Exhaust System, I was struck by how solid it felt in my hands. The all-welded T-304 stainless steel construction exudes quality, and the weight gives it a substantial feel, not flimsy at all.
Mounting it up was surprisingly straightforward thanks to the bolt-on design. No fuss, no fiddling with complicated parts—just a clean, all-metal fit that looks built to last.
The polished finish really catches the light, adding a sleek, aggressive look to the back of your Mustang.
Once installed, the true magic begins. The classic Borla sound is unmistakable—deep, refined, and just loud enough to turn heads without being overbearing.
It transforms the driving experience, making every acceleration feel more visceral and exciting.
Driving around, I noticed the exhaust note is crisp and consistent, with a noticeable boost in volume compared to stock. It’s perfect for those who want a sporty tone that’s still refined and premium.
The sound quality really sets it apart from other systems that can sound tinny or fake.
There’s also a noticeable improvement in performance. The system’s all-welded design helps optimize flow, so your Mustang feels more responsive and a little more aggressive on the throttle.
It’s a noticeable upgrade that doesn’t sacrifice daily comfort.
Of course, the price is on the higher side, but considering the quality and sound, it’s a worthwhile investment for serious enthusiasts. Plus, being made in the USA adds that extra layer of pride and craftsmanship.
2011-2014 Mustang Roush V6 3.7 Axle Back Dual Exhaust Kit
- ✓ Deep, aggressive sound
- ✓ Easy to install
- ✓ Sleek black tips
- ✕ Slight drone at highway speeds
- ✕ Pricey at $549.99
| Material | 409 stainless steel pipes and muffler, 304 stainless steel exhaust tips with black powder coating |
| Design | Open-chambered for increased airflow and reduced back pressure |
| Compatibility | Fits 2011-2014 Mustang V6 3.7L, Coupe and Convertible |
| Performance Improvement | Increases horsepower and torque |
| Emission Impact | Does not negatively affect emissions |
| Tip Finish | Powder-coated black stainless steel tips |
As I unboxed the Roush V6 Axle Back Exhaust, I was surprised by how solid it felt right out of the box. The black powder-coated tips instantly caught my eye—they add a sleek, aggressive look that really stands out on my 2013 Mustang.
Installing it was surprisingly straightforward, thanks to clear instructions and quality hardware. The pipes and muffler are made from durable 409 stainless steel, giving me confidence they’ll last through the years.
Once installed, I immediately noticed a more aggressive growl—not just louder, but deeper and more refined.
The open-chambered design really does boost airflow, and I could feel the difference in torque during acceleration. It’s like my V6 finally got the attention it deserved.
The sound isn’t overwhelming but has enough presence to turn heads at stoplights or on the highway.
One thing I love is that it doesn’t affect emissions, so no worries there. The black tips stay looking sharp, even after a few weeks of daily driving.
Overall, this exhaust kit transforms the car’s personality without sacrificing reliability or legality.
If you’re after a noticeable sound upgrade and a sportier look, this Roush axle back is a top-tier choice. It’s a perfect blend of performance, style, and durability—great value for the price.
Just be prepared for some extra attention from fellow Mustang enthusiasts.
What Makes an Axle Back Exhaust the Best Choice for a 2013 Mustang GT?
Performance gains are another critical factor, as a well-designed axle back exhaust can lower back pressure and increase exhaust flow. This improvement often translates to noticeable horsepower and torque increases, making the vehicle feel more responsive.
Weight reduction is an essential consideration for performance vehicles. By replacing the stock exhaust with a lighter aftermarket option, the 2013 Mustang GT can benefit from improved acceleration and handling characteristics.
Enhanced appearance is achieved through the stylish designs and finishes that many axle back systems offer. These visual upgrades can make the car look more aggressive and sporty, appealing to both aesthetic and performance-minded drivers.
Easy installation is a significant advantage of axle back exhaust systems, as they typically do not require extensive tools or professional help. This feature allows owners to upgrade their exhaust systems with relative ease, enjoying the benefits without a complicated process.
Customization options are plentiful in the aftermarket exhaust market. With various brands and designs to choose from, Mustang owners can find an axle back exhaust that matches their specific performance goals and personal style preferences.
How Do Different Axle Back Exhausts Compare in Terms of Sound Quality?
| Exhaust Brand | Sound Level | Tone | Drone | Material | Price Range | Weight | Warranty |
|---|---|---|---|---|---|---|---|
| Brand A | Loud – Aggressive sound that is noticeable at all RPMs. | Deep – Produces a rich, deep tone that resonates well. | Moderate – Some drone at highway speeds but manageable. | Stainless Steel | $500 – $700 | 30 lbs | Lifetime Warranty |
| Brand B | Moderate – Balanced sound that is not overpowering. | Sporty – Gives a sporty growl without being too harsh. | Low – Minimal drone, comfortable for long drives. | Aluminized Steel | $400 – $600 | 28 lbs | 3-Year Warranty |
| Brand C | Very Loud – Generates a loud, aggressive roar especially at full throttle. | Raspy – Has a raspy tone that appeals to performance enthusiasts. | High – Noticeable drone that might be off-putting for some. | Stainless Steel | $600 – $800 | 32 lbs | 5-Year Warranty |
What Performance Improvements Can Be Expected from Upgrading to an Axle Back Exhaust?
The lighter weight of aftermarket systems contributes not only to improved speed but also to better handling dynamics, as less weight can mean improved cornering and stability. The enhanced sound profile resonates well with enthusiasts, providing a satisfying auditory experience that aligns with performance expectations.
Finally, the aesthetic upgrades associated with an axle back exhaust can make a vehicle stand out, enhancing its sporty appearance while reflecting the owner’s taste and commitment to performance enhancements.
What Key Features Should You Look for in an Axle Back Exhaust System?
Sound level is a key feature since it significantly affects the driving experience. Some drivers prefer a loud, aggressive growl that enhances the car’s sporty appeal, while others may want a more refined sound that is less disruptive.
Fitment and compatibility are essential to ensure that the axle back exhaust will install easily without requiring additional modifications. An exhaust system designed for the specific model will align perfectly with existing mounting points and exhaust tips.
Performance gains are a significant consideration, as an axle back exhaust can improve exhaust flow, leading to increased horsepower and torque. Look for systems that have been tested for performance enhancements to ensure that you are making a worthwhile investment.
Brand reputation is vital when selecting an axle back exhaust system, as established brands often have a track record of quality and customer satisfaction. Brands with good reputations are likely to offer reliable products backed by warranties and responsive customer service, providing peace of mind with your purchase.
How Does Pricing Vary Across Top Axle Back Exhaust Brands for the 2013 Mustang GT?
The pricing for axle back exhaust systems for the 2013 Mustang GT varies significantly across different brands, reflecting factors such as material quality, design, and brand reputation.
- Ford Performance: Prices for Ford Performance axle back exhaust systems typically range from $600 to $800. These systems are designed specifically for the Mustang and offer a factory fit, ensuring optimal performance and sound. They are made from high-quality materials and are engineered to enhance the vehicle’s aggressive sound profile while maintaining durability.
- Borla: Borla exhaust systems are known for their premium quality, with prices ranging from $700 to $1,200. They utilize high-grade stainless steel and feature a patented multi-core technology that offers a unique, aggressive sound without being overly loud. Borla also provides a lifetime warranty, which adds value to the investment.
- MagnaFlow: MagnaFlow’s axle back exhaust options usually cost between $600 and $900. These systems are designed to provide a deep, throaty exhaust note and are constructed from stainless steel for long-lasting performance. MagnaFlow also emphasizes performance gains in horsepower and torque, making them a popular choice among enthusiasts.
- Flowmaster: Flowmaster exhaust systems are available in the price range of $500 to $800. Known for their distinctive sound, Flowmaster uses their patented chambered technology to create a unique exhaust tone that appeals to many Mustang owners. Their systems are also built to withstand harsh conditions, ensuring longevity and reliability.
- Roush: Roush axle back exhaust systems are priced from $600 to $1,000 and are engineered to deliver a performance boost alongside an aggressive exhaust note. These systems are specifically tuned for the Mustang GT and provide a balanced sound that enhances the driving experience. Roush also focuses on aesthetics, often adding stylish tips that enhance the vehicle’s appearance.
- American Racing Headers: Typically priced between $800 and $1,200, American Racing Headers offer high-quality exhaust solutions known for their performance-enhancing capabilities. These systems are designed for enthusiasts looking to maximize horsepower and torque, making them a go-to choice for serious racers. The construction from premium materials ensures they can handle high-performance applications.
What Do Real Mustang GT Owners Say About Their Axle Back Exhaust Experiences?
Real Mustang GT owners have shared their experiences regarding various axle-back exhaust options, highlighting performance, sound, and installation aspects.
- Borla ATAK: Owners praise the Borla ATAK for its aggressive sound and performance boost, making it a popular choice among enthusiasts.
- MagnaFlow Street Series: Users appreciate the MagnaFlow Street Series for its deep, throaty tone that enhances the Mustang’s character without being overly loud.
- Roush Axle-Back: The Roush Axle-Back is favored for its unique sound and distinctive styling, appealing to those who want a blend of performance and aesthetics.
- Flowmaster Outlaw: Many owners report that the Flowmaster Outlaw provides a loud and aggressive exhaust note, making it ideal for those seeking a bold presence on the road.
- CGS Motorsports: Enthusiasts commend CGS Motorsports for delivering a balanced sound that enhances the driving experience while maintaining a comfortable cabin noise level.
The Borla ATAK is well-known among Mustang GT owners for its loud and aggressive exhaust note, which complements the car’s muscle car heritage. Users often report noticeable improvements in performance, particularly in throttle response and acceleration, making it a top recommendation for those seeking the best axle-back exhaust for a 2013 Mustang GT.
The MagnaFlow Street Series is appreciated for its refined sound that strikes a balance between performance and daily drivability. Many owners enjoy the deep tone that resonates well during acceleration while keeping noise levels manageable during regular driving, making it suitable for both enthusiasts and casual drivers alike.
Roush Axle-Back systems are often highlighted for their distinctive styling and unique sound profile. Many owners find that the Roush exhaust enhances not only the performance of their Mustang GT but also its visual appeal, as the exhaust tips add a sporty touch that complements the car’s design.
The Flowmaster Outlaw is notorious for its extreme loudness, which attracts those who want their Mustang to make a statement. Owners express satisfaction with the aggressive tone, especially during wide-open throttle, although some note that it can be a bit too loud for everyday use, especially in residential areas.
Lastly, CGS Motorsports offers a more balanced sound experience that resonates well with many Mustang GT owners. Users often find it provides a noticeable upgrade over stock without being excessively loud, making it a solid option for those who want to enjoy a sporty sound while maintaining comfort during longer drives.
Where Can You Find the Best Deals on Axle Back Exhaust for a 2013 Mustang GT?
To find the best deals on axle back exhaust for a 2013 Mustang GT, consider the following options:
- Online Retailers: Websites like Amazon, Summit Racing, and AmericanMuscle often have competitive prices and customer reviews that can help in decision-making.
- Local Performance Shops: Visiting local auto shops can provide personalized service and potential discounts on installation along with the purchase of the exhaust system.
- Manufacturer Websites: Checking out the official websites of well-known exhaust brands such as Borla, Flowmaster, and MagnaFlow can yield promotional offers or direct sales.
- Automotive Forums and Social Media Groups: Engaging with the Mustang community on platforms like Facebook or dedicated forums can lead to insider tips on sales and second-hand exhaust systems.
- Seasonal Sales and Promotions: Keeping an eye out for holiday sales, Black Friday, or end-of-year clearances can result in significant savings on exhaust systems.
Online retailers often provide a wide range of options and detailed customer feedback, which can assist in selecting the best axle back exhaust for a 2013 Mustang GT. They may also offer free shipping and easy return policies, making online shopping a convenient choice.
Local performance shops can offer a hands-on experience where you can physically inspect the exhaust systems, talk to experts, and possibly negotiate better prices, especially if you are getting other services done at the same time.
Manufacturer websites typically have the latest product information and may offer exclusive deals, warranties, or package bundles that can provide better value. It’s also wise to sign up for newsletters to receive updates on special promotions.
Automotive forums and social media groups are excellent resources for finding deals, as members often sell their used parts at discounted prices or share insider knowledge on current sales and promotions from various retailers.
Seasonal sales can be an advantageous time to buy, as many retailers will offer significant discounts during major shopping events. Signing up for alerts can help ensure you don’t miss out on these opportunities.
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