Choosing the best cat-back exhaust system for a sports car involves balancing performance gains, sound preferences, and budget. The MagnaFlow Street Series stands out as the best overall for blending power with a refined tone, while the Flowmaster Outlaw offers a louder, aggressive sound for enthusiasts seeking maximum exhaust note. The main tradeoffs include potential increased cabin noise and the cost of premium materials. Continue reading for an in-depth comparison that highlights what each system offers and who it suits best.
Key Takeaways
- Top-performing systems like MagnaFlow and Borla excel in sound quality and durability, but often come at a higher price.
- Black-coated and dual-exit designs tend to offer a more aggressive look and sound, appealing to performance-focused buyers.
- Material quality, especially stainless steel or aluminized steel, significantly impacts longevity and maintenance needs.
- Installation complexity varies; some systems are straightforward bolt-ons, while others require modifications or professional help.
- Price ranges widely, so balancing budget with desired performance and sound is essential for making the right choice.
| MBRP Catback Exhaust Aluminum |  | Best Overall for Performance Enhancement | Material: Aluminized | Tubing Diameter: 3 in. | Exit: Dual Rear | VIEW LATEST PRICE | See Our Full Breakdown |
| Borla 140081 Cat-Back System Exhaust |  | Best Value for Durability and Longevity | Material: Aircraft-quality stainless steel | Application: Cat-back exhaust system | VIEW LATEST PRICE | See Our Full Breakdown | |
| MBRP S5338BLK 3″ Cat Back Exhaust System (Single Side Exit Black) |  | Best for Style and Easy Installation | Finish: Black | Tubing Diameter: 3 inches | Installation: Bolt-on, no weld required | VIEW LATEST PRICE | See Our Full Breakdown |
| Flowmaster Outlaw Cat-back Exhaust System |  | Best for Aggressive Sound and Performance | Material: Stainless Steel | Shape: Oval | Inlet Connection Size: 3 Inches | VIEW LATEST PRICE | See Our Full Breakdown |
| MagnaFlow Performance Exhaust System 15665: Street Series |  | Best for Deep Sound and Easy Installation | Model: 15665 | Type: Cat-Back, Street Series | Material: Stainless Steel | VIEW LATEST PRICE | See Our Full Breakdown |
| MBRP S5200AL 3-Inch Cat Back Single Side Exhaust System |  | Best Value for Balanced Performance and Ease of Installation | Material: T304 stainless steel | Diameter: 3 inches | Type: Cat back, single side | VIEW LATEST PRICE | See Our Full Breakdown |
| MagnaFlow Cat-Back Performance Exhaust System 15677 – Competition Series, Stainless Steel, 2.5in Main Piping, Dual Split Rear Exit, Polished 3.5in Exhaust Tip for Mustang |  | Best for Motorsport-Inspired Sound and Performance | Material: Stainless Steel | Main Piping Diameter: 2.5 inches | Exhaust Tip Diameter: 3.5 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| MBRP S7275BLK 3″ Cat Back Dual Split Rear Race Exhaust System with 4.5″ Tips (Black Coated) |  | Best for Aggressive Sound and Race-Style Performance | Material: Black coated steel | Tip Size: 4.5 inches | Configuration: Dual split rear | VIEW LATEST PRICE | See Our Full Breakdown |
| Gibson 9802 Dual Sport Cat-Back Exhaust System |  | Best for Durability and Classic Performance | Exits: Behind rear tire | Pipe diameter: 1.75 inches | Tip size: 3 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| 2 Inch Valved Muffler Exhaust Cutout with Muffler Cat Back Exhaust System Kit (2pcs) |  | Best for Customizable Sound Control | Diameter: 2 inches | Control: Remote-controlled valved system | Operation: Vacuum actuator | VIEW LATEST PRICE | See Our Full Breakdown |
| MagnaFlow Performance Exhaust System 15684: Cat-Back, Street Series |  | Best for High-Performance Street Use | Model Number: 15684 | Fit Type: Vehicle Specific | Material: Heavy-duty stainless steel | VIEW LATEST PRICE | See Our Full Breakdown |
More Details on Our Top Picks
MBRP Catback Exhaust Aluminum
This aluminum cat-back exhaust stands out for its ability to boost torque, horsepower, and throttle response, providing a noticeable performance upgrade over stock systems. Compared with the stainless steel options, such as the MagnaFlow Street Series, its lighter aluminum construction may not last as long but offers easier handling during installation. Its dual rear exits produce an aggressive sound, which is ideal for drivers seeking a sporty roar, yet this noise level can become intrusive at high speeds. The aluminized material offers decent corrosion resistance but falls short of the durability of stainless steel, making it more suitable for enthusiasts willing to maintain it regularly. Overall, this system delivers a strong power bump and improved response, but the tradeoff is increased noise and potentially shorter lifespan.
Pros:- Significant torque and horsepower improvements
- Reduces exhaust gas temperatures for better engine efficiency
- Enhances throttle response for more immediate power delivery
Cons:- Can be excessively noisy at high speeds
- Installation may be complex for DIYers
- Aluminized material may not be as durable as stainless steel
Best for: Performance-focused drivers who want a noticeable power increase without a high price tag
Not ideal for: Owners seeking long-term durability and a quieter ride, as aluminum may degrade faster and noise levels are high
- Material:Aluminized
- Tubing Diameter:3 in.
- Exit:Dual Rear
Bottom line: This system is ideal for enthusiasts wanting maximum performance gains in a lightweight package, accepting higher noise and potentially lower durability.
Borla 140081 Cat-Back System Exhaust
Made from corrosion-resistant aircraft-quality stainless steel, the Borla 140081 offers remarkable durability and high-performance exhaust flow, making it a solid choice for drivers who demand longevity. Unlike the aluminum MBRP system, Borla’s stainless steel resists rust and corrosion, promising many years of reliable use. Although it carries a higher price tag, this system’s build quality justifies the investment, especially for those who prefer a maintenance-free experience. Installation typically requires professional help, but the system’s design minimizes noise while still improving exhaust efficiency. Compared to the MBRP aluminum system, Borla prioritizes durability over weight savings, which might be a concern for some. This system is perfect for owners seeking a long-lasting exhaust with a premium feel.
Pros:- Corrosion-resistant stainless steel construction
- High durability with corrosion protection
- Improves exhaust flow and engine efficiency
- Low-maintenance, rust-free design
Cons:- Higher cost compared to aluminum options
- Installation may need professional assistance
Best for: Long-term owners who want a corrosion-proof exhaust that maintains performance over time
Not ideal for: Budget-conscious buyers or those seeking a lightweight, easy-to-install system, as it may require professional installation and costs more
- Material:Aircraft-quality stainless steel
- Application:Cat-back exhaust system
Bottom line: This exhaust is best for owners prioritizing durability and performance longevity over initial cost or weight savings.
MBRP S5338BLK 3″ Cat Back Exhaust System (Single Side Exit Black)
This MBRP system’s 3-inch mandrel bent steel tubing combined with a black heat-resistant finish makes it a standout for those who want a stylish, straightforward upgrade. Its bolt-on design means no welding is necessary, streamlining the installation process compared to more complex systems like the Flowmaster Outlaw. The black finish adds a sleek, aggressive look, and the tuned sound appeals to drivers looking for a noticeable exhaust note. However, it’s tailored mainly for specific truck models, reducing its compatibility with a range of sports cars, and the louder exhaust tone might be too much for those seeking a subtle upgrade. Compared to the more refined sound of MagnaFlow, this system emphasizes style and ease but sacrifices broad compatibility.
Pros:- Simple bolt-on installation without welding
- Durable, heat-resistant black coating
- Enhances vehicle performance and style
- Tuned exhaust sound
Cons:- Limited compatibility to certain truck models
- May produce louder exhaust that some find excessive
Best for: Owners wanting a visually striking, easy-to-install exhaust for their truck or compatible vehicle
Not ideal for: Sportscar owners seeking a refined sound or universal fit, as it’s designed mainly for trucks and can be loud
- Finish:Black
- Tubing Diameter:3 inches
- Installation:Bolt-on, no weld required
- Exit Type:Single side exit
- Material:Mandrel bent steel
Bottom line: This pick is best for drivers wanting a stylish, easy-to-install upgrade with a bold look and sound, mainly suited to trucks.
Flowmaster Outlaw Cat-back Exhaust System
The Flowmaster Outlaw exhaust system is designed for drivers who crave a bold, aggressive sound coupled with performance gains. Its large 4-inch ceramic-coated stainless steel tips add a commanding visual statement, while the oval shape of the muffler enhances sound quality. Compared with the MagnaFlow Street Series, which offers a deeper but less aggressive tone, the Outlaw emphasizes a louder, more intense exhaust note. Its stainless steel construction ensures durability, and factory hanger compatibility simplifies installation. The significant weight—around 29.5 kg—may be cumbersome, especially for DIY installation. Its specific fit means it’s best suited for certain vehicle models, limiting universal application. Overall, this system appeals to those chasing a loud, performance-oriented exhaust with a striking look.
Pros:- Large 4-inch ceramic-coated tips for bold appearance
- All stainless steel for durability
- Factory hanger compatible for easier installation
- Backed by a lifetime limited warranty
Cons:- Heavy weight may complicate handling
- Very loud tone may be intrusive for daily use
- Limited fit to specific vehicle models
Best for: Performance enthusiasts seeking a loud, aggressive exhaust with a bold visual presence
Not ideal for: Daily drivers or those sensitive to loud exhaust notes, due to its potentially intrusive sound and weight
- Material:Stainless Steel
- Shape:Oval
- Inlet Connection Size:3 Inches
- Outlet Connection Size:4 Inches
- Warranty:Limited Lifetime
Bottom line: This system is well-suited for drivers prioritizing a loud, aggressive exhaust with a commanding visual presence, accepting added weight and noise.
MagnaFlow Performance Exhaust System 15665: Street Series
The MagnaFlow Street Series 15665 combines a deep, resonant exhaust tone with straightforward installation, making it an excellent choice for those seeking a balance of sound and performance. Its stainless steel construction ensures corrosion resistance, similar to the MagnaFlow 15684, but with a slightly more aggressive sound profile. Compared to the Borla system, which emphasizes durability, MagnaFlow’s focus is on a throaty, deep exhaust note that appeals to enthusiasts craving character. The OEM-like fitment and simple bolt-on design reduce installation difficulty, although some mechanical skill may still be required. However, louder than stock, this system might not suit drivers seeking a quieter ride. Overall, it strikes a good balance between sound, performance, and ease of installation.
Pros:- Deep, throaty exhaust note
- Improves engine performance and power
- Durable, corrosion-resistant stainless steel
- Easy to install with OEM-like fitment
Cons:- May be louder than stock exhaust
- Installation could be challenging for some amateurs
Best for: Owners wanting a deep, resonant exhaust tone with straightforward installation and reliable performance
Not ideal for: Those preferring a quieter, more subtle exhaust or with limited mechanical skills, due to potential louder sound and installation nuances
- Model:15665
- Type:Cat-Back, Street Series
- Material:Stainless Steel
- Made in:USA
- Warranty:Limited lifetime
Bottom line: This system suits drivers looking for a deep, characterful exhaust with easy installation and solid durability, accepting some increased volume.
MBRP S5200AL 3-Inch Cat Back Single Side Exhaust System
This MBRP system stands out for its high-quality T304 stainless steel construction and straightforward installation, making it a solid choice for enthusiasts seeking better sound and modest power gains without a hefty price. Its mellow exhaust note adds a refined tone compared to more aggressive options like the MBRP S7275BLK, which favors more aggressive sound but involves more complex installation. While it improves fuel economy slightly—around 1-2 mpg—some users might find tuning necessary for maximum performance. The stainless steel ensures durability, and the system’s design supports a noticeable boost in torque and horsepower. However, beginners might encounter challenges during installation, especially if tuning is needed for optimal results.
Pros:- High-quality T304 stainless steel for durability
- Enhances exhaust sound with a mellow, refined tone
- Easy installation with common hand tools
- Potential fuel economy improvement
Cons:- May require professional tuning for peak performance
- Installation can be tricky for beginners
Best for: Budget-conscious car owners who want an upgrade with decent sound and improved efficiency
Not ideal for: Drivers seeking maximum horsepower or an aggressive exhaust tone without tuning experience
- Material:T304 stainless steel
- Diameter:3 inches
- Type:Cat back, single side
- Tip:Mirror-polished
- Performance Gains:1-2 mpg fuel economy, increased torque and horsepower
Bottom line: This system is ideal for budget-minded enthusiasts wanting a reliable, mild upgrade with straightforward installation.
MagnaFlow Cat-Back Performance Exhaust System 15677 – Competition Series, Stainless Steel, 2.5in Main Piping, Dual Split Rear Exit, Polished 3.5in Exhaust Tip for Mustang
Compared with the MBRP S5200AL, this MagnaFlow Competition Series system emphasizes high-performance gains and a sporty, motorsport-inspired exhaust note. Its 2.5-inch piping optimizes flow for more horsepower and torque, ideal for drivers pushing their car on track days or spirited street drives. The stainless steel build promises durability, and the OEM-like fitment simplifies installation, especially for those familiar with mechanical work. Be aware, though, that this system can be quite loud for regular street use, making it less suitable for daily commuters. Its design is tailored for specific vehicles like the Mustang, limiting compatibility for other models.
Pros:- Enhanced engine flow for increased horsepower and torque
- Motorsport-inspired, aggressive exhaust sound
- Stainless steel construction for durability
- OEM-like fitment for easy installation
Cons:- May be excessively loud for daily street driving
- Designed primarily for specific vehicle models like the Mustang
Best for: Performance-focused drivers who want a sporty, track-ready sound and improved power
Not ideal for: Daily drivers seeking a quiet, subtle exhaust note or those with limited mechanical skills
- Material:Stainless Steel
- Main Piping Diameter:2.5 inches
- Exhaust Tip Diameter:3.5 inches
- Inlet Connection Size:3.5 inches
- Configuration:Dual split rear
Bottom line: Ideal for enthusiasts seeking aggressive performance and sound, but less suited for quiet, everyday use.
MBRP S7275BLK 3″ Cat Back Dual Split Rear Race Exhaust System with 4.5″ Tips (Black Coated)
This MBRP system stands out for its dual split rear outlets and large 4.5-inch tips, delivering an unmistakably aggressive exhaust note that appeals to drivers craving a race-inspired sound. The black high heat coating not only adds a sleek, aggressive look but also helps with durability. Compared to the MBRP S5200AL, which offers a milder tone, this kit prioritizes sound and visual impact over subtlety, making it more suitable for track days or show cars. Installation requires mechanical skill, especially due to the larger tips and dual outlets. The coating may also wear over time, especially under harsh conditions.
Pros:- Increases horsepower and torque
- Distinctive aggressive sound profile
- High heat black coating for a sleek look
- Large 4.5-inch tips for visual appeal
Cons:- Requires mechanical skill for installation
- Black coating might wear over time
Best for: Performance enthusiasts seeking maximum sound and visual impact for their sports car
Not ideal for: Daily drivers or those concerned about long-term coating wear and quieter operation
- Material:Black coated steel
- Tip Size:4.5 inches
- Configuration:Dual split rear
- System Type:Cat back
Bottom line: Best suited for owners wanting a loud, aggressive exhaust with a stylish appearance for performance or show cars.
Gibson 9802 Dual Sport Cat-Back Exhaust System
The Gibson 9802 offers a durable aluminized steel construction with stainless steel tips, making it a practical choice for drivers who prioritize longevity along with performance. Its 1.75-inch pipes provide a balanced flow, suitable for those who want a performance upgrade without the extreme sound levels of larger or dual systems. The exhaust exits behind the rear tire, giving a clean look while maintaining a quieter, more refined tone than the more aggressive options like the MBRP S7275BLK. Installation might require some technical skill, especially for those unfamiliar with welded systems. For owners seeking a dependable, moderate upgrade, this system hits a good middle ground.
Pros:- Fully welded aluminized muffler for longevity
- Stainless steel tips add durability and style
- Exits behind rear tire for a clean appearance
- Balanced pipe diameter for moderate performance gains
Cons:- Installation may require technical skills
- Limited sound and performance compared to larger, more aggressive systems
Best for: Owners desiring a durable, reliable upgrade with moderate sound and performance improvements
Not ideal for: Performance purists seeking maximum horsepower or loud, aggressive exhaust notes
- Exits:Behind rear tire
- Pipe diameter:1.75 inches
- Tip size:3 inches
- Material:Aluminized steel with stainless steel tips
- Warranty:Lifetime limited
Bottom line: A solid choice for those wanting a dependable, moderate upgrade with a clean look and reliable performance.
2 Inch Valved Muffler Exhaust Cutout with Muffler Cat Back Exhaust System Kit (2pcs)
This kit stands out for its innovative remote-controlled valved design, allowing drivers to switch between a deep, aggressive exhaust note and a quieter ride. Compared with the MagnaFlow Street Series, which emphasizes raw performance, this system offers a unique advantage in sound management, making it ideal for those who want versatility. The vacuum actuator is durable and maintenance-free, but the installation can be tricky for novices and might require extra space in some vehicles. The included remotes enable quick toggling, enhancing driving experience without sacrificing convenience. This exhaust system is perfect for enthusiasts who want to tailor their sound on the fly and aren’t deterred by complex installation.
Pros:- Remote-controlled valve system for customizable exhaust sound
- Complete kit with easy-to-use remotes included
- Durable vacuum actuator for reliable operation
Cons:- Requires sufficient space for proper installation
- May be complex for those unfamiliar with automotive modifications
- Compatibility limitations with some vehicle models
Best for: Car enthusiasts who prioritize customizable exhaust sound and enjoy tuning their ride for different scenarios
Not ideal for: Inexperienced DIYers or those with limited space, as installation complexity and vehicle compatibility could be challenging
- Diameter:2 inches
- Control:Remote-controlled valved system
- Operation:Vacuum actuator
- Kit Includes:2 muffler cutouts, 2 remotes
- Warranty:2 years
- Power Supply:12V
Bottom line: This system is best suited for drivers seeking adjustable sound levels and willing to handle installation complexity.
MagnaFlow Performance Exhaust System 15684: Cat-Back, Street Series
This MagnaFlow model is a prime choice for drivers seeking improved engine output and exhaust efficiency, especially when compared to the valved exhaust kit that focuses on sound customization. Made from heavy-duty stainless steel and CARB certified, it offers durability and legal compliance across the U.S. Its design reduces back pressure and engine heat, translating directly into increased horsepower and torque. The installation may require some technical skill, limiting accessibility for casual DIYers, and it is vehicle-specific, which means compatibility must be confirmed beforehand. Nevertheless, the lifetime warranty and robust construction make this system a compelling upgrade for enthusiasts aiming for real performance gains. This exhaust system appeals to those who prioritize power and durability over adjustable sound or ease of installation.
Pros:- Enhances engine performance and exhaust flow
- Heavy-duty stainless steel construction
- CARB certified for nationwide legality
- Lifetime warranty included
Cons:- Installation can be complex without technical knowledge
- Designed for specific vehicle models, limiting flexibility
Best for: Performance-oriented car owners wanting a durable, legal exhaust upgrade for street use
Not ideal for: Beginners or casual drivers who prefer plug-and-play solutions or have incompatible vehicle models
- Model Number:15684
- Fit Type:Vehicle Specific
- Material:Heavy-duty stainless steel
- Certification:CARB certified
- Warranty:Lifetime
Bottom line: Ideal for experienced enthusiasts seeking a durable, high-performance exhaust upgrade with legal street approval.
How We Picked
Products were evaluated based on performance potential, build quality, sound characteristics, ease of installation, and overall value. Emphasis was placed on systems that are compatible with popular sports car models, offering real improvements in power and sound without excessive complexity or cost. The ranking reflects a combination of customer reviews, expert insights, and the reputation of brands for durability and sound quality. Systems that balance performance with affordability or offer premium features were prioritized, ensuring options for different budgets and needs.Factors to Consider When Choosing Best Cat-back Exhaust Systems For Sports Cars
When selecting a cat-back exhaust system for a sports car, it’s important to consider several factors that influence performance, sound, and longevity. Not all systems deliver the same benefits, and some choices involve tradeoffs between volume, tone, and fuel efficiency. A clear understanding of these factors can help you avoid common pitfalls and get a system that aligns with your driving style and expectations.Performance Gains and Sound
While many exhaust systems promise increased horsepower, the actual gains can vary based on design and material. Consider whether you want a subtle boost or a loud, race-inspired sound. Some systems are tuned to enhance torque and throttle response, which can make a noticeable difference in driving dynamics. Keep in mind that louder systems may lead to increased cabin noise and could be less street-friendly in certain areas.
Material Quality and Durability
Stainless steel is the gold standard for longevity, resisting rust and corrosion over years of use. Aluminized steel offers a more budget-friendly option but often wears out faster. Pay attention to the thickness and quality of the piping and tips, especially if you plan to keep your system for the long term. A well-built system will maintain its appearance and performance despite exposure to heat and road conditions.
Compatibility and Fitment
Ensuring the system fits your specific sports car model is critical. Some systems are universal, requiring modifications, while others are designed as direct bolt-ons. Measure clearance around the rear bumper and exhaust routing to prevent interference with other components. Proper fitment not only simplifies installation but also ensures optimal performance and sound without rattles or leaks.
Installation and Maintenance
Ease of installation can vary from simple bolt-ons to systems needing welding or professional setup. Consider whether you have the tools and skills or if professional installation is worth the cost. Maintenance requirements are also important; systems with high-quality coatings and stainless steel construction generally require less upkeep and resist corrosion better.
Budget and Long-Term Value
Pricing ranges significantly, and choosing the cheapest option may compromise durability or sound quality. Conversely, investing in a premium system can yield better longevity and a more refined sound. Think about your long-term goals—if you plan to upgrade further or keep the car for years, a higher-quality system might be a smarter investment. Balance immediate costs against durability and performance benefits.
Frequently Asked Questions
Will installing a new cat-back exhaust system affect my car’s warranty?
Replacing the exhaust system can potentially impact your vehicle’s warranty, especially if the modification is not OEM-approved. It’s advisable to check your manufacturer’s warranty terms and consult with your dealer before making changes. Some brands offer warranty-compatible systems, but it’s important to verify coverage and installation requirements to avoid voiding your warranty unintentionally.
Can a cat-back exhaust system improve fuel efficiency?
In some cases, a well-designed exhaust system can enhance airflow, which might lead to slight improvements in fuel economy. However, most systems are optimized for performance and sound rather than fuel savings. Aggressive or louder exhausts can sometimes increase fuel consumption because they encourage more spirited driving. For meaningful gains in efficiency, consider systems specifically tuned for that purpose alongside your driving habits.
Is it worth paying extra for a stainless steel exhaust system?
Investing in stainless steel generally offers better durability and resistance to rust, especially important if you live in a region with harsh weather or salted roads. Although stainless steel systems tend to be more expensive upfront, they often last longer and require less maintenance, making them a worthwhile choice for long-term owners. Cheaper materials may save money initially but could lead to corrosion and replacement costs sooner.
How loud is too loud for daily driving?
The maximum acceptable noise level varies by personal preference and local regulations. Generally, systems with large mufflers, straight pipes, or aggressive tuning can produce sounds that are disruptive to occupants or neighbors. If you plan to use your car daily, consider a system that offers a good balance—loud enough to enjoy the sportier tone but not so extreme that it causes fatigue or legal issues during regular commutes.
Do I need to modify my car’s ECU when installing a new exhaust system?
Most modern sports cars do not require ECU remapping for basic exhaust upgrades, especially if the system is designed as a direct bolt-on. However, some high-performance systems or those that significantly alter airflow may benefit from ECU tuning to maximize gains and prevent check engine lights. Consulting with a professional tuner can help determine if remapping is necessary and ensure your system performs at its best without compromising safety or reliability.
