Best Exhaust Systems for 2015-2023 S550 Mustang GT
Quick-Pick Comparison
In-Depth Reviews
Fi Exhaust 2015-2026 Ford Mustang MK6 GT 5.0 Pre Facelift Valvetronic Catback Exhaust (Qua
⚠ Lead Time & Order TermsRequired Reading ⏱Lead Time: 4–8 weeks. Every Fi EXHAUST system is hand-built to order at Fi’s Taiwan factory. Production begins the moment your...
Pros
- Premium brand with excellent reputation
- High-quality materials and finish
- Top-tier product in this category
Cons
- Highest price point in this roundup
- May require a tune for optimal performance
Fi Exhaust 2015-2026 Ford Mustang MK6 GT 5.0 Pre Facelift Valvetronic Catback Exhaust (Dua
⚠ Lead Time & Order TermsRequired Reading ⏱Lead Time: 4–8 weeks. Every Fi EXHAUST system is hand-built to order at Fi’s Taiwan factory. Production begins the moment your...
Pros
- Premium brand with excellent reputation
- High-quality materials and finish
- Performance horsepower gains
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
Roush Performance 2018-2023 Ford Mustang GT 5.0L V8 Active Exhaust Kit (Without Active Exhaust)
[embedyt] https://www.youtube.com/watch?v=o3sImWaVCmk[/embedyt] The included console-mounted selector switch has a brushed aluminum finish and seamlessly switches between four different preset and...
Pros
- Trusted aftermarket manufacturer
- High-quality materials and finish
- Bolt-on installation
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
Borla Exhaust 2018-2023 Ford Mustang GT ATAK Cat-Back Exhaust With Carbon Fiber Tips - Black
Provides an Aggressive, Race-Inspired Sound Boosts Torque and Horsepower Crafted From 3-inch Mandrel Bent Stainless Steel Built With a Straight-Though Design With No Drone Includes 4-Inch Carbon...
Pros
- Trusted aftermarket manufacturer
- Lightweight carbon fiber construction
- Aggressive exhaust note
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
Borla Exhaust 2018-2023 Ford Mustang GT ATAK Cat-Back Exhaust With Black Chrome Tips
Aggressive Exhaust Sound Improved Horsepower And Torque Acoustically Tuned Applied Kinetics Exhaust Includes X-Pipe Utilizes Un-Polished 3-inch Stainless Steel With 4-Inch Black Chrome Tips...
Pros
- Trusted aftermarket manufacturer
- High-quality materials and finish
- Performance horsepower gains
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
MBRP 2018-2022 Ford Mustang GT 5.0L 3-Inch Cat-Back Exhaust - Street Profile, T304 Stainless
2018-2022 Ford Mustang GT · 5.0L Coyote V8 · 3-Inch Mandrel-Bent Cat-Back System Cat-Back Material T304 Stainless Sound Profile Street Profile Exit Dual Split Rear Tubing 3-Inch, Mandrel-Bent...
Pros
- Trusted aftermarket manufacturer
- Corrosion-resistant stainless steel
- Bolt-on installation
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
Anderson Composites 2015-2017 Ford Mustang Carbon Fiber Rear Diffuser For Quad Tip Exhaust
ANDERSON COMPOSITES PREMIUM CARBON FIBER COMPONENTS Part # AC-RL15FDMU-ARQ Overview Anderson Composites components are carefully hand-crafted using only the finest materials. Our production team...
Pros
- Trusted aftermarket manufacturer
- Lightweight carbon fiber construction
- Aggressive exhaust note
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
MBRP 2015-2017 Ford Mustang GT 5.0L 3-Inch Cat-Back Exhaust - Street Profile, T304 Stainless
2015-2017 Ford Mustang GT · 5.0L Coyote V8 · 3-Inch Mandrel-Bent Cat-BackSystemCat-BackMaterialT304 StainlessSound ProfileStreet ProfileExitDual Split RearTubing3-Inch,...
Pros
- Trusted aftermarket manufacturer
- Corrosion-resistant stainless steel
- Performance horsepower gains
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
MBRP 2018-2021 Ford Mustang GT 5.0L 2.5-Inch Axle-Back Exhaust - Race Profile, T304 Stainless
2018-2021 Ford Mustang GT · 5.0L Coyote V8 · 2.5-Inch Mandrel-Bent Axle-BackSystemAxle-BackMaterialT304 StainlessSound ProfileRace ProfileExitQuad Rear ExitTubing2.5-Inch,...
Pros
- Trusted aftermarket manufacturer
- Corrosion-resistant stainless steel
- Bolt-on installation
Cons
- Mid-range pricing may not suit all budgets
- May require a tune for optimal performance
MBRP 2015-2017 Ford Mustang GT 5.0L 2.5-Inch Axle-Back Exhaust - Race Profile, T304 Stainless
2015-2017 Ford Mustang GT · 5.0L Coyote V8 · 2.5-Inch Mandrel-Bent Axle-BackSystemAxle-BackMaterialT304 StainlessSound ProfileRace ProfileExitDual Rear ExitTubing2.5-Inch,...
Pros
- Trusted aftermarket manufacturer
- Corrosion-resistant stainless steel
- Aggressive exhaust note
Cons
- Fewer premium features than higher-end options
- May require a tune for optimal performance
How to Choose the Right Exhaust Systems for Your S550 Mustang GT
Selecting the right exhaust system for your 2015-2023 S550 Mustang GT involves balancing sound, performance, and legal compliance. The exhaust is one of the most impactful modifications you can make, affecting both the driving experience and measurable horsepower output.
Sound Profile
Consider how aggressive you want the exhaust note to be. Cat-back systems generally produce a moderate volume increase, while axle-back setups offer the most dramatic change in tone. If you live in a noise-restricted area, look for systems with resonators that keep the volume civilized during daily driving.
Material and Construction
Stainless steel systems resist corrosion and last the lifetime of the vehicle, while titanium options save weight at a premium price. Mandrel-bent tubing ensures smooth exhaust flow and maximizes power gains. Avoid crush-bent pipes, which restrict flow and reduce the performance benefit.
Installation Complexity
Most cat-back and axle-back systems are designed for bolt-on installation with basic hand tools. However, downpipe and header installations often require removing additional components and may need a professional tune to avoid check engine lights. Factor in installation cost when comparing total value across different systems.
Frequently Asked Questions
What is the best exhaust system for a 2015-2023 S550 Mustang GT?
The best exhaust system depends on your priorities. For maximum performance, look for a full cat-back system from a premium brand. For the best sound with minimal modification, an axle-back system is the most accessible starting point. We carry 10 exhaust options for the S550 Mustang GT from brands including FI Exhaust, Roush Performance, Borla Exhaust, MBRP, Anderson Composites, with prices ranging from $490 to $3,680.
Do I need a tune after installing an exhaust on my S550 Mustang GT?
Cat-back and axle-back exhaust systems generally do not require a tune because they do not affect the sensors or catalytic converters upstream. However, if you install headers or a downpipe alongside the exhaust, a tune is strongly recommended to optimize air-fuel ratios and prevent check engine lights.
Will an aftermarket exhaust void my S550 Mustang GT warranty?
Under the Magnuson-Moss Warranty Act, a dealer cannot void your warranty simply because you installed an aftermarket exhaust. They must prove that the modification directly caused the failure they are refusing to cover. That said, some dealers are more modification-friendly than others, so it is worth discussing with your service advisor before installation.
What is the difference between cat-back and axle-back exhaust systems?
A cat-back system replaces all exhaust components from the catalytic converter back to the exhaust tips, including the mid-pipe, resonator, and muffler. An axle-back system only replaces the section from the rear axle to the tips, which is a smaller and more affordable modification. Cat-back systems typically deliver greater performance gains and a more dramatic sound change.
How much horsepower does an aftermarket exhaust add to a S550 Mustang GT?
A high-quality cat-back exhaust system typically adds 8 to 20 horsepower on a naturally aspirated engine and can contribute to even larger gains on forced-induction platforms when paired with a tune. The actual gain depends on the specific system, your vehicle's engine, and whether other supporting modifications are installed.
