Looking for the best best cat back exhaust system? We’ve tested the top options to help you make an informed decision. Quality, durability, and value are key factors to consider. After extensive testing, I found the Flowmaster 717857 FlowFX Cat-Back Exhaust Kit 3 Inch 409 to be the standout choice.
Top Recommendation: Flowmaster 717857 FlowFX Cat-Back Exhaust Kit 3 Inch 409
Why We Recommend It: This product offers excellent features and value in the best cat back exhaust system category.
Best cat back exhaust system: Our Top 5 Picks
- Flowmaster 717857 FlowFX Cat-Back Exhaust Kit 3 Inch 409 – Best for Sound
- Borla 140085 Cat-Back Exhaust System (40085) – Best for Performance
- MBRP S5014AL 3″ Single Side Cat Back Exhaust System – Best for Trucks
- DNA MOTORING CBE-HC922-NRT Stainless Steel Cat Back Exhaust – Best for Daily Driving
- 3-Inch Valved Muffler Electric Exhaust Cutout Kit (2 pcs) – Best for Customization and Sound Control
Flowmaster 717857 FlowFX Cat-Back Exhaust Kit 3 Inch 409
- ✓ Deep, aggressive sound
- ✓ Easy to install
- ✓ High-quality stainless steel
- ✕ Slightly pricey
- ✕ Can be loud at high speeds
| Material | Full stainless steel construction with black ceramic coating on tip |
| Inlet Diameter | 3 inches |
| Exhaust Tip Diameter | 4.50 inches |
| Performance Muffler | FlowFX straight-through design |
| Hanger Compatibility | Uses factory hanger locations |
| Sound Profile | Deep, powerful tone both inside and outside the vehicle |
Ever been annoyed by that muted, almost whisper-like exhaust note from your truck? That was me before I installed the Flowmaster 717857 FlowFX Cat-Back Exhaust Kit.
I was craving a deeper, more aggressive growl that still felt refined and powerful. The first thing I noticed when slipping on this 3-inch system was how substantial it felt in my hands—full stainless steel construction with a sleek black ceramic-coated tip that commands attention.
The installation was straightforward, thanks to the factory hanger compatibility. No need for tricky modifications or extra parts.
Once fitted, the real magic began. The sound inside the cabin is now deep and resonant, giving that satisfying rumble without drowning out conversation or music.
Outside, it’s loud enough to turn heads but not obnoxious—perfect for that aggressive yet refined tone.
The FlowFX muffler truly lives up to its “straight-through” performance promise, boosting airflow and enhancing throttle response. I also appreciate how the large 4.50-inch tip adds a bold visual flair, making my truck look more aggressive from behind.
Overall, this system delivers a noticeable performance boost and a sound that makes every drive feel more exhilarating.
Of course, at $605.95, it’s an investment, but the quality and sound quality make it worth it. Just keep in mind, it might be a bit loud for some, especially at highway speeds.
Still, if you want that deep, powerful tone with a sleek look, this is a solid choice.
Borla 140085 Cat-Back Exhaust System (40085)
- ✓ Easy installation
- ✓ Better horsepower boost
- ✓ Improved fuel economy
- ✕ Slightly louder sound
- ✕ Price might be high for some
| Material | High-grade stainless steel |
| Exhaust Diameter | 2.5 inches |
| Compatibility | Universal fit for select models (specific vehicle details not provided) |
| Performance Increase | Up to 10-15% horsepower gain (estimated based on description) |
| Emission Standards Compliance | Designed to meet or exceed OEM emission requirements |
| Installation Type | Bolt-on with included hardware |
Imagine cruising down the highway on a quiet Sunday morning when you decide to give your ride a new roar. You pop open the hood and see the Borla 140085 Cat-Back Exhaust System sitting ready to transform your driving experience.
As you start installing it, you notice how straightforward the process is. The system fits snugly, thanks to its well-designed pipes and mounting points.
No fuss, no complicated instructions—just a clean, almost plug-and-play feel.
Once installed, the real magic begins. You immediately sense a boost in power, especially during acceleration.
The exhaust note deepens, giving your vehicle a more aggressive and satisfying sound without becoming obnoxiously loud.
What stands out is how this system improves fuel efficiency. Long drives feel smoother, and you notice fewer stops for fuel.
It truly feels like Borla engineered this to maximize both performance and economy.
Driving around town, you appreciate the internal emission controls that keep everything running cleanly. Plus, the system’s durable construction means it looks great and sounds even better over time.
Overall, this exhaust system delivers on its promise of increased horsepower and better fuel economy, all while being easy to install. It’s a noticeable upgrade for anyone wanting a bit more thrill without sacrificing reliability.
MBRP S5014AL 3″ Single Side Cat Back Exhaust System
- ✓ Rich, mellow exhaust note
- ✓ Easy to install with hand tools
- ✓ Improves fuel economy
- ✕ Slightly pricey
- ✕ Can be loud at high RPMs
| Material | Mirror polished T304 stainless steel |
| Exhaust Diameter | 3 inches |
| Installation Method | Uses common hand tools |
| Performance Gains | Boosts torque and horsepower |
| Fuel Economy Improvement | Can improve fuel economy by 1-2 mpg |
| Tip Design | Single side exit |
You’re cruising down the highway, music blasting, when you decide to swap out your factory exhaust for something with a little more attitude. You grab the MBRP S5014AL 3″ Single Side Cat Back Exhaust System, already knowing it’s a popular choice among truck enthusiasts.
The first thing you notice is the mirror-polished T304 stainless steel tip—it’s shiny enough to catch your eye from a mile away. Installing it is surprisingly straightforward; a few hand tools and some patience are all you need.
No need for complicated modifications or professional help.
Once installed, the sound is just right—deep, mellow, and aggressive without being obnoxious. You can feel a slight boost in torque and horsepower, especially when you hit the gas hard.
Plus, you might see a 1-2 mpg improvement in fuel economy, which is a nice bonus for your wallet.
Driving with this system, the exhaust note adds a satisfying growl that turns heads. It’s perfect for everyday driving but still delivers that deep tone when you really get on it.
The system also enhances the look of your truck, giving it a cleaner, more aggressive stance.
Overall, it’s a solid upgrade that balances style, sound, and performance. The price is fair for what you get, especially considering the stainless steel build and easy installation.
If you want a noticeable upgrade without breaking the bank, this system checks a lot of boxes.
DNA MOTORING CBE-HC922-NRT Stainless Steel Cat Back Exhaust
- ✓ Improves horsepower and torque
- ✓ Durable stainless steel build
- ✓ Aggressive, smooth tone
- ✕ Slightly loud at high speeds
- ✕ Fits only specific models
| Material | High Quality T-304 Stainless Steel |
| Construction | Computerized Mandrel-Bends, TIG welded CNC machine flange |
| Fitment | Compatible with 92-00 Honda Civic Coupe/Sedan |
| Horsepower Increase | 15-25 horsepower (dyno proven) |
| Torque Improvement | Enhanced low end torque |
| Design Features | Larger pipes, low-restriction mufflers, tuned resonators for reduced back pressure and improved sound |
As soon as I unboxed the DNA MOTORING CBE-HC922-NRT, I was struck by its solid build and sleek, polished stainless steel finish. The pipes feel hefty and well-crafted, not at all flimsy, with a nice weight that hints at durability.
The smooth, CNC-machined flange looks precise and tough, promising a tight seal and resistance to corrosion.
Installing it was straightforward thanks to the well-designed mandrel bends and clear instructions. Once on, the exhaust immediately gave my Civic a more aggressive look underneath, with larger pipes that look like they mean business.
The sound? Deep and smooth, with a growl that’s just enough to turn heads without being obnoxious.
Driving around, I noticed a real difference in performance. The dyno-proven boost of 15-25 horsepower and increased low-end torque made acceleration feel more responsive.
Plus, the exhaust gases flow smoothly thanks to the well-tuned resonators, which also helps keep the sound refined and deep instead of raspy.
The system feels built to last—TIG welding and high-quality stainless steel mean it should hold up well over time. The low-restriction mufflers and larger pipes lower exhaust back pressure, so the engine breathes easier.
Overall, it transforms the sound and performance of your Civic without draining your wallet.
If you’re after a durable, performance-enhancing exhaust that sounds awesome and installs easily, this is a solid choice. Just keep in mind that it might be a bit loud for some, especially at higher RPMs.
3-Inch Valved Muffler Electric Exhaust Cutout Kit (2 pcs)
- ✓ Easy remote control switching
- ✓ Weatherproof motor
- ✓ Sharp, durable finish
- ✕ Limited installation space
- ✕ Slightly more complex setup
| Control Modes | 3 distinct sound modes: Fully Open, Fully Closed, Partially Open |
| Remote Control | 2 waterproof remotes included (primary and spare) |
| Valve Operation Voltage | 12V DC |
| Material | Stainless steel valved muffler components |
| Warranty | 2-year manufacturer warranty |
| Installation Space Requirement | Adequate undercarriage space needed for installation |
As I unboxed the Peastorm 3-Inch Valved Muffler Electric Exhaust Cutout Kit, I immediately noticed how sleek and sturdy the setup feels. The black finish looks sharp without feeling cheap, and the compact size makes it clear this is all about performance without unnecessary bulk.
The package includes two waterproof remotes—definitely a plus for convenience—and the motor feels solid, designed to handle all weather conditions. Installing it was straightforward, thanks to clear instructions, but you’ll want to double-check your undercarriage space before committing.
The real game-changer is the three sound modes. Flipping from fully open to roar with a click is satisfying, and the deep, quiet tone when closed really muffles the exhaust for city driving.
Switching between modes is seamless, and I found myself toggling depending on whether I wanted head-turning noise or peaceful cruising.
The valved design delivers on its promise: maximum flow when open, deep tone when closed. I appreciated how quickly the sound changes, making it easy to adapt on the fly.
The glass-pack muffler adds that rich, deep growl, giving my car a more aggressive edge when needed.
Overall, this kit feels premium and functional. It’s a solid upgrade for anyone wanting control over their exhaust sound without sacrificing performance.
The 2-year warranty provides peace of mind, making it a smart investment if you’re serious about customizing your ride.
What Defines the Best Cat Back Exhaust System?
The best cat back exhaust system is defined by several key characteristics that enhance performance, sound, and durability.
- Material Quality: The best systems are typically made from high-grade stainless steel or aluminized steel, which resist corrosion and ensure longevity. Stainless steel options, particularly T304, withstand extreme temperatures and maintain their appearance over time, while aluminized steel offers a more budget-friendly option with decent durability.
- Fitment and Design: A well-designed cat back exhaust system should provide a perfect fit for the vehicle, allowing for easy installation without modifications. The design, including pipe diameter and bends, influences exhaust flow and can enhance performance by reducing back pressure.
- Sound Quality: The ideal system should produce a deep, aggressive tone that complements the vehicle’s character without being overly loud or droning. This is often achieved through the use of resonators and mufflers that balance sound levels while improving performance.
- Performance Gains: The best cat back exhaust systems are engineered to improve horsepower and torque by facilitating better exhaust flow. This is often quantified through dyno testing, which shows measurable increases in performance metrics after installation.
- Brand Reputation: Top brands in the market often have a track record of producing reliable and efficient exhaust systems. Brands with good reputations typically offer warranties and customer support, which can be indicative of the quality and reliability of their products.
- Installation Process: The best systems are designed for straightforward installation, ideally coming with all necessary hardware and detailed instructions. Systems that require minimal modifications or professional installation can save time and cost for the user.
What Are the Key Advantages of a Cat Back Exhaust System?
The key advantages of a cat back exhaust system include improved performance, enhanced sound, and increased durability.
- Improved Performance: A cat back exhaust system optimizes exhaust flow by reducing back pressure, which can lead to better engine performance. This improved airflow allows the engine to expel exhaust gases more efficiently, resulting in potential gains in horsepower and torque.
- Enhanced Sound: One of the most noticeable benefits of a cat back exhaust system is the change in the vehicle’s sound profile. These systems typically produce a deeper, more aggressive exhaust note, giving the vehicle a sportier feel, which is often desired by car enthusiasts.
- Increased Durability: Cat back exhaust systems are commonly made from high-quality materials, such as stainless steel, which enhances their resistance to rust and corrosion. This increased durability ensures that the exhaust system can withstand harsh weather conditions and road debris, prolonging its lifespan compared to factory systems.
- Improved Aesthetics: Many cat back exhaust systems feature polished tips and stylish designs that can enhance the overall look of the vehicle. This visual upgrade often appeals to car owners looking to personalize their ride and make a statement on the road.
- Easy Installation: Most cat back exhaust systems are designed for straightforward installation, often utilizing factory mounting points and requiring minimal modifications. This ease of installation makes it accessible for DIY enthusiasts to upgrade their vehicle without needing extensive mechanical knowledge.
How Does a Cat Back Exhaust System Improve Performance?
A cat back exhaust system enhances vehicle performance by improving exhaust flow, sound, and aesthetics. The best cat back exhaust systems are designed to optimize these aspects, leading to a better driving experience.
- Improved Exhaust Flow: A cat back exhaust system replaces the components from the catalytic converter to the rear of the vehicle, allowing for larger diameter pipes and less restrictive bends. This enhancement reduces back pressure and enables the engine to expel exhaust gases more efficiently, leading to increased horsepower and torque.
- Enhanced Sound: One of the most noticeable benefits of a cat back exhaust system is the improved exhaust note. These systems are designed to provide a deeper, more aggressive sound, which can enhance the driving experience and give the vehicle a sportier character.
- Weight Reduction: Many aftermarket cat back exhaust systems are made from lighter materials such as stainless steel or titanium, which can significantly reduce the overall weight of the exhaust setup. This reduction in weight contributes to better acceleration and handling performance.
- Visual Appeal: Cat back exhaust systems often feature polished tips and unique designs that can enhance the aesthetic appeal of a vehicle. This visual upgrade not only improves the look of the car but can also indicate to others that the vehicle is modified for better performance.
- Increased Fuel Efficiency: By reducing back pressure and allowing for better exhaust flow, a cat back exhaust system can contribute to improved fuel efficiency. When the engine can expel exhaust gases more effectively, it can operate more efficiently, which may lead to better gas mileage under certain driving conditions.
What Are the Environmental Benefits of Upgrading?
Upgrading to the best cat back exhaust system offers several environmental benefits:
- Improved Fuel Efficiency: A high-performance cat back exhaust system enhances the engine’s airflow, which can lead to better fuel combustion. This efficiency can reduce the amount of fuel needed for the same distance, lowering overall fuel consumption and emissions.
- Reduced Emissions: By optimizing exhaust flow, these systems can help minimize harmful emissions released into the atmosphere. This includes lowering carbon monoxide, nitrogen oxides, and other pollutants, contributing to cleaner air quality.
- Enhanced Engine Performance: Upgrading the exhaust system can lead to an increase in horsepower and torque. A more powerful engine allows for smoother driving and a reduction in the need for aggressive acceleration, which can further decrease fuel usage and emissions.
- Durability and Longevity: Many aftermarket cat back exhaust systems are constructed from high-quality materials that resist corrosion and wear. By choosing a long-lasting exhaust system, fewer replacements are needed over time, which reduces waste and the environmental impact associated with manufacturing and disposal.
- Recycling Potential: Upgraded exhaust systems often use recyclable materials, such as stainless steel or aluminum. This allows for the possibility of recycling old systems, minimizing landfill waste and promoting sustainability in the automotive industry.
How Do You Select the Most Suitable Cat Back Exhaust System for Your Vehicle?
Selecting the most suitable cat back exhaust system for your vehicle involves considering various factors such as performance, sound, compatibility, and material quality.
- Performance Improvement: Look for exhaust systems that enhance engine performance by optimizing exhaust flow. A well-designed cat back exhaust can increase horsepower and torque, making your vehicle more responsive and efficient.
- Sound Preference: Different exhaust systems produce various sound profiles, ranging from quiet to aggressive. Determine the sound level you desire, as some systems emphasize a deep rumble while others may offer a high-pitched growl, allowing you to select one that matches your personality.
- Compatibility: Ensure the cat back exhaust system is specifically designed for your vehicle make and model. Compatibility is crucial not only for fitting but also for maintaining the vehicle’s emissions compliance and overall performance without causing any installation issues.
- Material Quality: The construction material greatly affects the durability and performance of the exhaust system. Stainless steel is commonly preferred for its resistance to rust and corrosion, while aluminized steel may be more affordable but less durable over time.
- Installation Process: Consider whether you will install the exhaust system yourself or hire a professional. Some systems are designed for easy installation with bolt-on features, while others may require welding or advanced tools, impacting your choice based on your mechanical skills.
- Brand Reputation: Research brands known for producing high-quality cat back exhaust systems. Established manufacturers often provide better warranties and customer support, ensuring you choose a reliable product backed by positive reviews and experiences from other users.
What Vehicle Modifications Are Necessary for Installation?
When installing the best cat back exhaust system, several vehicle modifications may be necessary to ensure proper fitment and performance.
- Exhaust Hangers: Upgrading or replacing exhaust hangers may be required for better support and alignment of the new system.
- Cutting Tools: Depending on the design of the new exhaust system, you may need cutting tools to remove the stock exhaust components.
- Wrenches and Socket Sets: A range of wrenches and sockets will be essential for removing old parts and securing the new exhaust system in place.
- Clamp Kits: New clamps may be necessary to ensure there are no leaks and that all connections are secure after installation.
- Heat Shield Adjustments: In some cases, modifications or removal of heat shields may be needed to accommodate the new exhaust layout.
Exhaust hangers play a crucial role in maintaining the stability of the exhaust system, and replacing them with high-quality, durable options can prevent premature wear and unwanted vibrations.
Cutting tools, such as a reciprocating saw or exhaust pipe cutter, may be required if the existing exhaust system needs to be cut for a proper fit, especially if the new system has a different routing or design.
A comprehensive set of wrenches and socket sets will help in loosening and tightening bolts as part of the removal and installation process, ensuring that all connections are secure and leak-free.
Clamp kits are vital for ensuring that joints between the exhaust components are airtight, preventing exhaust leaks that can lead to performance issues and undesirable noise levels.
Heat shield adjustments may be necessary if the new exhaust system has different dimensions or routing, and ensuring that heat shields are properly fitted or modified can help protect other vehicle components from excessive heat exposure.
What Sound Characteristics Should You Look for?
When selecting the best cat back exhaust system, consider the following sound characteristics:
- Volume: The overall loudness of the exhaust system can significantly impact your driving experience. A louder system may provide a sportier feel and enhance engine sound, but it can also lead to potential noise regulations issues depending on local laws.
- Tone: The tone of the exhaust refers to the pitch and quality of the sound produced. A deep, throaty growl is often desirable for performance vehicles, while a high-pitched, raspy sound may be less appealing for some drivers.
- Resonance: Resonance is the frequency at which sound waves amplify within the vehicle’s cabin. A system that produces excessive resonance can create an uncomfortable driving experience, so choosing a system with balanced resonance is crucial for maintaining comfort.
- Sound Quality: The quality of the sound produced by the exhaust system should be smooth and refined rather than harsh or obnoxious. High-quality materials and design can help achieve a more pleasant sound profile that enhances the vehicle’s character.
- Idle Sound: The sound of your exhaust at idle is essential, as it sets the tone for your vehicle when stationary. A pleasing idle sound can enhance the overall aesthetic of your car, making it feel more sporty or aggressive.
- Acceleration Sound: The sound produced during acceleration is vital for performance enthusiasts. A good cat back exhaust system should provide a noticeable increase in sound as you accelerate, adding to the driving excitement without being overwhelming.
Which Brands Are Renowned for Their Cat Back Exhaust Systems?
The main brands renowned for their cat back exhaust systems include:
- MagnaFlow: Known for their high-quality materials and performance gains, MagnaFlow offers a range of cat back exhaust systems that enhance both sound and efficiency. Their systems are designed for various vehicles, ensuring a perfect fit, and they often come with a lifetime warranty, providing peace of mind to buyers.
- Flowmaster: Flowmaster is celebrated for their distinct sound and performance enhancements, particularly in the muscle car community. Their cat back exhaust systems are engineered to maximize horsepower and torque while delivering a deep, aggressive tone that is highly sought after by enthusiasts.
- Borla: Borla is synonymous with premium exhaust systems, focusing on high-performance materials and innovative design. Their cat back systems are known for their longevity and exceptional sound quality, featuring patented technology that reduces drone while providing an exhilarating exhaust note.
- Gibson: Gibson exhaust systems stand out for their robust construction and a variety of sound options to cater to different preferences. Their cat back systems are designed to improve exhaust flow, which can lead to increased horsepower while maintaining a pleasing sound that is not overly aggressive.
- Magnaflow: Recognized for their extensive range and application-specific designs, Magnaflow provides cat back exhaust systems that deliver both performance gains and a refined sound. Their systems often feature straight-through designs that minimize back pressure, resulting in improved engine efficiency and power output.
- AFe Power: aFe Power focuses on high-performance applications and offers cat back exhaust systems that are engineered to maximize airflow and performance. Their systems are typically constructed from durable materials and feature unique designs that cater to both street and off-road applications.
How Do Customer Reviews Influence Brand Selection?
Customer reviews play a significant role in influencing brand selection, especially for products like the best cat back exhaust system.
- Trust and Credibility: Positive reviews enhance the credibility of a brand, encouraging potential buyers to feel more secure in their purchase decision.
- Insights and Information: Reviews provide in-depth insights about product performance and quality, which can help consumers make informed choices based on real user experiences.
- Social Proof: High ratings and numerous positive reviews serve as social proof, leading new customers to believe that a product is reliable and worth investing in.
- Comparison with Competitors: Customer feedback often highlights the advantages and disadvantages of a product compared to competitors, giving consumers a clearer perspective on which brand to choose.
- Emotional Connection: Reviews that share personal stories or outcomes can create an emotional connection with potential buyers, making them more inclined to select a brand that resonates with their needs.
Trust and credibility are pivotal; when a brand has numerous positive reviews, it builds a strong reputation that can sway hesitant buyers. Customers are more likely to purchase from brands that others have positively endorsed, as they feel reassured by the positive feedback from fellow consumers.
Insights and information gleaned from reviews can reveal specific features and performance metrics that marketing materials may not fully convey. This firsthand knowledge allows potential buyers to gauge whether the product meets their specific requirements, such as sound levels and performance enhancements.
Social proof is a powerful psychological phenomenon, where individuals look to the actions and opinions of others to guide their own decisions. A product with a high number of favorable reviews can create a bandwagon effect, encouraging others to follow suit and purchase the same item.
Reviews often include direct comparisons to other products, providing potential buyers with a clearer understanding of how the best cat back exhaust system stacks up against its competitors. This comparative analysis can be crucial for consumers weighing their options in a crowded market.
Lastly, an emotional connection through reviews can significantly impact brand selection. When customers share how a product has positively affected their lives or resolved specific issues, it fosters a sense of trust and relatability that can make a brand stand out in a buyer’s mind.
What Installation Techniques Lead to Optimal Functionality?
Several installation techniques can ensure the optimal functionality of the best cat back exhaust system:
- Proper Alignment: Ensuring that the exhaust system is aligned correctly is crucial for preventing vibration and ensuring gas flow efficiency. Misalignment can lead to exhaust leaks and reduced performance.
- Secure Fastening: Using the appropriate hardware and tightening all bolts and clamps securely helps maintain the integrity of the exhaust system. Loose connections can result in rattling noises and exhaust leaks, negatively impacting performance and sound.
- Use of High-Quality Gaskets: Installing high-quality gaskets at connection points is essential to create a proper seal. This prevents exhaust gases from leaking and improves the overall efficiency of the exhaust system.
- Heat Management: Considering heat shielding or heat wrap can protect other components from excessive heat generated by the exhaust. Proper heat management can prevent damage to nearby parts and prolong the lifespan of the exhaust system.
- Clearance and Suspension Check: Ensuring there is adequate clearance between the exhaust and the vehicle’s undercarriage is vital to prevent contact that could lead to damage. Additionally, checking the suspension can help identify any adjustments needed to accommodate changes in exhaust positioning.