If you’re looking to boost your Ford Mustang GT’s performance and sound, a high-quality cat back exhaust system is a smart upgrade. The BORLA 140742 stands out as the best overall choice, offering a perfect balance of sound, durability, and performance. For those prioritizing aggressive tone on a budget, the Flowmaster 17116 American Thunder delivers strong value, while the BORLA 140067 provides premium craftsmanship for enthusiasts seeking top-tier quality. Each option comes with tradeoffs—some prioritize sound over installation ease, others focus on durability at a higher price. Keep reading for an in-depth look at each product and how to choose the right fit for your Mustang.
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Key Takeaways
- The top picks balance sound quality, build durability, and ease of installation, with the BORLA system leading overall.
- Budget options like Flowmaster still offer solid performance but may compromise on longevity or sound refinement.
- Material quality varies; stainless steel systems tend to last longer but come at a higher cost.
- Sound preferences differ: some want a deep, aggressive tone, while others prefer a more subtle exhaust note.
- Compatibility and fitment are crucial; always verify your Mustang model year and engine specifics before purchasing.
| cat back exhaust for ford mustang gt | Material | Brand | Fitment | Part Number |
|---|---|---|---|---|
| BORLA 140742 Cat-Back Exhaust | T-304 Stainless Steel | BORLA | 2018-2023 Ford Mustang GT (incl. Bullitt), 5.0L V8, Active Valve Exhaust | — |
| Flowmaster 17116 American Thun | 16-gauge aluminized steel | Flowmaster | — | 17116 |
| Flowmaster 17213 American Thun | Aluminized Steel, Stainless Steel Tips | Flowmaster | — | — |
| BORLA 140067 Cat-Back Performa | T-304 Stainless Steel | — | 1999-2004 Ford Mustang GT & Mach 1 | — |
| Flowmaster 17112 American Thun | 16-gauge aluminized steel, mandrel-bent | Flowmaster | — | 17112 |
| MBRP Armor Lite Cat-Back Exhau | Aluminized Steel | MBRP | 1999-2004 Ford Mustang GT/Mach 1 | S7221AL |
More Details on Our Top Picks
BORLA 140742 Cat-Back Exhaust System for 2018-2023 Ford Mustang GT 5.0L V8
This BORLA system stands out for its aggressive exhaust tone, thanks to the rear muffler delete that maximizes sound under acceleration. Compared to the Flowmaster 17116, it offers a more race-inspired, louder experience, but this comes at the expense of daily comfort, especially for those not used to such volume. Its all-welded, stainless steel construction ensures durability and a premium feel, making it ideal for Mustang owners seeking a high-performance look and sound. The bolt-on design simplifies installation, yet it’s not suited for convertibles, which lack the necessary structural support for the rear muffler delete. Overall, this pick is best for owners who prioritize a fierce, track-ready exhaust tone over subtlety or daily drivability.
Pros:- Extremely aggressive racing exhaust tone under acceleration
- Rear muffler delete maximizes exhaust sound for track use
- Bolt-on design with adjustable hangers for easy installation
- Durable T-304 stainless steel construction, made in USA
Cons:- Not recommended for convertible models due to structural considerations
- Aggressive tone may be too loud for daily street driving
Best for: Mustang owners who want an aggressive, race-inspired exhaust sound and are comfortable with louder tones
Not ideal for: Daily drivers who prefer a quieter, more refined exhaust experience or convertibles
- Brand:BORLA
- Model Number:140742
- Material:T-304 Stainless Steel
- Installation:Bolt-on
- Construction:All welded
- Fitment:2018-2023 Ford Mustang GT (incl. Bullitt), 5.0L V8, Active Valve Exhaust
- Country of Origin:USA
Our verdict“This system is perfect for Mustang owners craving a loud, track-ready exhaust with a premium build quality.”
Flowmaster 17116 American Thunder Cat-Back Exhaust Kit – 2.5 Inch Aluminized Steel for 1987-1993 Ford Mustang GT 5.0L
This Flowmaster kit offers a deep, aggressive exhaust note that enhances the classic Mustang 5.0L’s character, especially when compared to the more modern, aggressive tone of the BORLA system. It’s designed specifically for 1987-1993 models, making it a tailored upgrade for vintage Mustang enthusiasts. Its mandrel-bent aluminized steel tubing ensures durability at a more affordable price point, but it’s heavier and less corrosion-resistant than stainless steel options like BORLA’s. The dual rear exit configuration adds to the classic look and sound, though the system’s narrower fit limits flexibility. It’s ideal for owners seeking a nostalgic, aggressive sound with straightforward installation, but less suitable for those wanting a modern, stainless steel setup.
Pros:- Deep, aggressive exhaust tone that emphasizes classic muscle car sound
- Mandrel-bent aluminized steel tubing for durability and performance
- Easy installation using factory hanger locations, with included hardware
- Affordable price point for vintage Mustang upgrades
Cons:- Limited to 1987-1993 Mustang GT models, reducing versatility
- Aluminized steel less resistant to corrosion than stainless steel
Best for: Owners of 1987-1993 Ford Mustang GT who want authentic muscle car sound and performance
Not ideal for: Owners of newer Mustangs or those seeking stainless steel durability and quieter operation
- Brand:Flowmaster
- Part Number:17116
- Vehicle Fitment:1987-1993 Ford Mustang GT 5.0L
- Tubing Diameter:2.5 inches
- Material:16-gauge aluminized steel
- Mufflers:Super 44 Series
- Exit Style:Dual rear exit
Our verdict“This kit is ideal for vintage Mustang owners wanting a loud, authentic muscle car exhaust note at an accessible price.”
Flowmaster 17213 American Thunder Cat-Back Exhaust Kit for 1987-1993 Ford Mustang LX 5.0 and 1986 Mustang GT
Compared to the earlier 17116, the Flowmaster 17213 offers similar aggressive sound but is tailored for LX and 1986 GT models, making it a flexible choice for slightly different vintage setups. Its aluminized tubing and stainless steel tips provide a durable, performance-oriented solution, although it’s somewhat heavier, which may require additional support for some installations. The kit includes all hardware needed for an easy bolt-on process, making it accessible for DIY enthusiasts. The 3-year warranty offers peace of mind, but the specific fitment limits its use to certain years and models. This kit works best for owners who want a classic muscle sound with reliable hardware and a straightforward upgrade path.
Pros:- Aggressive sound that enhances muscle car character
- Durable stainless steel tips and aluminized tubing
- Easy bolt-on installation with included hardware
- 3-year warranty for added confidence
Cons:- Heavier than some stainless steel systems, potentially requiring extra support
- Limited to specific model years, reducing flexibility for other Mustangs
Best for: Owners of 1986-1993 Mustangs seeking a durable, aggressive exhaust upgrade with flexible model compatibility
Not ideal for: Mustang owners outside the specified years or those seeking stainless steel components for maximum corrosion resistance
- Brand:Flowmaster
- Model Number:17213
- Material:Aluminized Steel, Stainless Steel Tips
- Tubing Diameter:2.5 inches
- Compatibility:1987-1993 Ford Mustang LX 5.0, 1986 Mustang GT
- Warranty:3 years
Our verdict“This kit is suited for vintage Mustang owners needing a tough, aggressive sound with reliable hardware and compatible fitment.”
BORLA 140067 Cat-Back Performance Exhaust System for Ford Mustang GT & Mach 1 4.6L V8
This BORLA S-Type system for 1999-2004 Mustangs emphasizes increased power and torque, paired with a no-drone guarantee that makes it appealing for daily use. It surpasses the sound of many budget options, such as certain aluminized steel kits, by offering a more refined, powerful exhaust note thanks to its all-welded T-304 stainless steel construction. The dual split rear tips add a stylish touch, and its bolt-on design simplifies installation. Compared with the BORLA 140458, it provides a slightly more aggressive tone while maintaining comfort. However, the premium price reflects its high-quality materials and performance benefits, making it less ideal for budget-conscious buyers. This system is best suited for Mustang owners seeking a balance of power, durability, and civilized sound.
Pros:- Made in USA from durable T-304 stainless steel
- Bolt-on installation with a precise fit
- No drone guarantee enhances daily comfort
- Increases power, torque, and engine longevity
Cons:- Premium pricing may deter budget-minded buyers
- Only fits 1999-2004 Mustang GT and Mach 1 models
Best for: Daily drivers wanting increased power with a refined, no-drone exhaust tone in 1999-2004 Mustang GT or Mach 1
Not ideal for: Owners seeking a loud, race-inspired sound or on older Mustang models outside the specified years
- Fitment:1999-2004 Ford Mustang GT & Mach 1
- Material:T-304 Stainless Steel
- Installation:Bolt-on
- Construction:All welded
- Sound Level:ATAK
- Exit Style:Dual split rear
- Tips:Single 4″ round chrome tips on each side
- Country of Origin:USA
Our verdict“This system offers a refined, powerful upgrade for daily-driven Mustangs willing to invest in durability and comfort.”
Flowmaster 17112 American Thunder Cat-Back Exhaust Kit – 2.5 Inch Aluminized Steel for 1994-1997 Ford Mustang GT/Cobra
The Flowmaster 17112 American Thunder stands out for its aggressive, performance-oriented tone tailored specifically for 1994-1997 Mustang GT and Cobra models. Its dual rear exit and Super 44 Series mufflers deliver a throaty, loud sound that enthusiasts will love, especially compared to the quieter BORLA systems in the roundup. The mandrel-bent 16-gauge aluminized steel tubing ensures durability and optimal flow, making it a solid choice for those seeking both sound and performance. Installation is straightforward with factory hanger compatibility, but the sound level might be overwhelming for daily drivers or those living in noise-sensitive areas. This system’s narrow vehicle compatibility means it’s less flexible for other model years or engine types.
Pros:- Aggressive, performance-oriented exhaust tone
- Easy installation using factory hanger locations
- Mandrel-bent 16-gauge aluminized steel for durability and flow
Cons:- Very loud; may be too aggressive for some drivers
- Limited to 1994-1997 models, reducing versatility
Best for: Drivers who want a loud, aggressive exhaust tone and are committed to a classic Mustang build from 1994-1997
Not ideal for: Daily commuters or owners of newer Mustang models who prefer a more subdued or modern exhaust sound
- Brand:Flowmaster
- Part Number:17112
- Tubing Diameter:2.5 inches
- Material:16-gauge aluminized steel, mandrel-bent
- Mufflers:Super 44 Series
- Exit Style:Dual rear exit
- Vehicle Fitment:1994-1997 Ford Mustang GT and Cobra
- Item Weight:50.2 pounds
- UPC:700042010080
Our verdict“This system is perfect for enthusiasts seeking a bold, classic sound in a straightforward upgrade for older Mustangs.”
MBRP Armor Lite Cat-Back Exhaust System for 1999-2004 Ford Mustang GT/Mach 1
The MBRP Armor Lite system offers a balanced approach, enhancing torque, horsepower, and throttle response for 1999-2004 Mustang GT and Mach 1 models. Compared to the Flowmaster option, it prioritizes performance gains that translate into better driving dynamics, especially in acceleration and response. Its 2.5-inch aluminized steel tubing and dual-walled 3.5-inch tips provide corrosion resistance and a clean look. While it adds noticeable power improvements, its weight at 58.3 pounds is higher, which could concern those seeking the lightest setup. The limited customer feedback (only 3 reviews) makes long-term reliability less certain, but its performance benefits are clear for daily drivers and weekend warriors alike.
Pros:- Enhances torque and horsepower for better driving dynamics
- Increases throttle response and lowers exhaust gas temps
- Aluminized steel construction resists corrosion
Cons:- Limited long-term reliability data due to few reviews
- Heavier weight may impact performance marginally
Best for: Owners seeking a performance upgrade that improves throttle response and torque without sacrificing everyday drivability
Not ideal for: Budget-conscious buyers or those who prioritize long-term durability without frequent maintenance, given the limited review data
- Brand:MBRP
- Part Number:S7221AL
- Fitment:1999-2004 Ford Mustang GT/Mach 1
- Pipe Diameter:2.5 in.
- Material:Aluminized Steel
- Exit Configuration:Dual Rear Exit
- Tip Size:3.5 in. Dual Walled
- Item Weight:58.3 pounds
- UPC:882963130983
Our verdict“This system makes the most sense for Mustang owners wanting noticeable power boosts and improved response for everyday use.”
How We Picked
The products in this roundup were chosen based on their fitment for Ford Mustang GT models, with a focus on performance enhancement, sound quality, build materials, and ease of installation. We prioritized brands with proven reputations for durability and performance, and included options across different price points to suit various budgets. Each system was evaluated for its overall value, with considerations for longevity, ease of maintenance, and user reviews. The ranking reflects a combination of these factors, aiming to help buyers find the best balance of quality and affordability for their Mustang in 2026.| cat back exhaust for ford mustang gt | Brand | Exit Style |
|---|---|---|
| BORLA 140742 Cat-Back Exhaust | BORLA | — |
| Flowmaster 17116 American Thun | Flowmaster | Dual rear exit |
| Flowmaster 17213 American Thun | Flowmaster | — |
| BORLA 140067 Cat-Back Performa | — | Dual split rear |
| Flowmaster 17112 American Thun | Flowmaster | Dual rear exit |
| MBRP Armor Lite Cat-Back Exhau | MBRP | — |
Factors to Consider When Choosing Cat Back Exhaust For Ford Mustang Gt
Choosing the right cat back exhaust for your Ford Mustang GT involves weighing several factors beyond just sound. Understanding these key considerations can help you avoid common pitfalls and select a system that matches your driving style, budget, and longevity expectations.Material Quality and Durability
Exhaust systems are exposed to high heat and road conditions, making material choice critical. Stainless steel options, especially T304, tend to resist rust and corrosion longer, ensuring your investment lasts. Aluminized steel offers a more affordable alternative but may not hold up as well over time. Consider how much you’re willing to spend upfront versus long-term durability when choosing your system.
Sound and Tone
Sound preferences vary widely among Mustang owners. Some seek a deep, aggressive growl, while others prefer a subtler tone for daily driving. Systems with larger diameter pipes and free-flowing mufflers typically produce louder, more aggressive sounds. Be cautious: louder isn’t always better if it leads to drone or discomfort during extended drives. Listening to sound clips or attending local meets can help clarify your ideal tone.
Performance Gains
While many cat back exhausts claim to boost horsepower and torque, actual gains depend on the system’s design and your vehicle’s setup. A high-quality system with smooth bends and minimal restrictions can improve airflow, resulting in measurable performance improvements. However, these gains are often modest without additional modifications like tuning or intake upgrades. Focus on systems that prioritize flow efficiency if performance is your main goal.
Ease of Installation and Compatibility
A system that fits your specific Mustang model and engine configuration simplifies installation. Some brands offer bolt-on designs requiring basic tools, while others might need welding or professional installation. Verify compatibility with your Mustang’s year and engine to avoid fitment issues. Reading user reviews about installation difficulty can also save time and frustration.
Price and Overall Value
Pricing varies widely, with premium systems offering top-tier materials and sound but at a higher cost. Cheaper options can still provide noticeable sound improvements but might lack longevity or warranty support. Decide your priority: if you want a long-lasting, high-performance system, investing more makes sense. Conversely, if you’re on a budget, a mid-range option can still deliver a satisfying upgrade without breaking the bank.
Frequently Asked Questions
Will a cat back exhaust system increase my Mustang’s horsepower?
Most cat back exhaust systems can provide a modest increase in horsepower and torque by improving exhaust flow. The actual gains depend on the system’s design and your vehicle’s other modifications. For significant performance improvements, consider pairing the exhaust with tuning or intake upgrades. Nonetheless, a quality system can make your Mustang feel more responsive and aggressive during acceleration.
Is it difficult to install a cat back exhaust myself?
Installation difficulty varies depending on the system and your mechanical skills. Many bolt-on systems with clamp connections are designed for DIY installation and require only basic hand tools. However, some systems may need welding or specialized tools, which could necessitate professional help. Always review the manufacturer’s instructions and consider your experience level before attempting installation.
How do I choose between a louder or more subtle exhaust tone?
Choosing the right tone depends on your personal preference and how you use your Mustang. Louder systems with larger pipes and aftermarket mufflers produce a deep, aggressive sound that’s ideal for enthusiasts seeking attention. More subtle setups maintain a stock-like tone, suitable for daily driving or if you’re concerned about noise regulations. Listening to sound clips and test drives can help you find the right balance for your needs.
Will installing an aftermarket exhaust void my Mustang’s warranty?
Installing an aftermarket exhaust can potentially impact your vehicle’s warranty, especially if it causes issues related to emissions or engine performance. Many manufacturers state that modifications should not void the entire warranty but may exclude coverage for related components. To avoid disputes, keep documentation and consider consulting your dealer or warranty provider before installing aftermarket parts.
What should I consider regarding maintenance and longevity of the exhaust system?
High-quality materials like stainless steel require less maintenance and resist rust longer, extending the system’s lifespan. Regular inspections for rust, leaks, or damage help maintain performance and sound quality. Coatings or protective wraps can add extra durability, especially if you live in areas with harsh weather or road salt. Investing in a system with good corrosion resistance can save money and effort over time.
Conclusion
For the typical Mustang enthusiast, the BORLA 140742 offers the best overall blend of sound, durability, and performance. If you’re on a budget but still want noticeable sound improvements, the Flowmaster 17116 American Thunder provides excellent value. For those seeking a premium, long-lasting system with a refined tone, the BORLA 140067 stands out as the top choice. Beginners or casual owners should prioritize systems that are straightforward to install, while performance junkies might look for systems emphasizing airflow and horsepower gains. Your ideal choice hinges on your driving style, budget, and desired sound profile—use these insights to select the perfect cat back exhaust for your Mustang in 2026.
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