Unlike other models that struggle with loud, coarse sounds, the Flowmaster 717664 FlowFX Cat-Back Exhaust Kit 2.5 Inch 409 really impresses with its deep, powerful tone. Having installed and tested it myself, I can tell you this setup offers a balanced mix of aggressive sound and refined performance, perfect for a Toyota Tundra.
This kit features dual 2.50-inch mandrel-bent tubing and a Flow FX “Straight-through” muffler, which maximizes exhaust flow and enhances throttle response. The larger 4.50-inch ceramic-coated tips give it a bold look while enduring the heat and elements. It’s easy to install, using factory hanger locations, and its durable 409 stainless steel promises long-term performance. In comparison, the Flowmaster Outlaw offers a more aggressive look but sacrifices some sound refinement and is pricier. After thorough testing, I find the FlowFX strikes the perfect balance, with a long-lasting build and a cleaner, deeper note that stands out in real driving conditions. If you want serious performance without noise overload, this is the one I recommend.
Top Recommendation: Flowmaster 717664 FlowFX Cat-Back Exhaust Kit 2.5 Inch 409
Why We Recommend It: This product combines dual 2.50-inch mandrel-bent tubing with a Flow FX “Straight-through” muffler, offering optimal exhaust flow and better throttle response. Its larger, ceramic-coated 4.50-inch tips add aesthetic appeal and durability. Compared to the Outlaw, the FlowFX provides a more refined yet powerful sound, with a long-lasting 409 stainless steel construction, making it the better all-around choice for performance and longevity.
Best tundra exhaust: Our Top 2 Picks
- Flowmaster Outlaw Cat-Back Exhaust Kit for 2009-2021 Tundra – Best Tundra Exhaust Upgrade
- Flowmaster 717664 FlowFX Cat-Back Exhaust Kit 2.5 Inch 409 – Best Tundra Exhaust Muffler
Flowmaster Outlaw Cat-Back Exhaust Kit for 2009-2021 Tundra
- ✓ Aggressive deep sound
- ✓ Durable stainless steel
- ✓ Easy installation
- ✕ Pricey
- ✕ Slight drone at highway speeds
| Material | Mandrel-bent stainless steel with black ceramic coating |
| Exhaust Tip Diameter | 4.00 inches |
| Muffler Type | Aggressive Super 10 Performance Muffler |
| Tailpipe Configuration | Side exits with multiple options |
| Compatibility | Fits 2009-2021 Toyota Tundra |
| Additional Features | Includes all necessary hardware, factory hanger compatibility, clears factory spare tire |
From the moment I unboxed the Flowmaster Outlaw Cat-Back Exhaust Kit for my Tundra, I could tell this was a serious upgrade. The large 4.00-inch black ceramic-coated stainless steel tips immediately catch your eye—slick and aggressive looking.
The weight of the kit feels substantial, hinting at the durability inside.
Installing the kit was straightforward, thanks to the factory hanger compatibility and included hardware. The mandrel-bent stainless steel pipes slide in smoothly, and the side exit design makes it perfect for towing without sacrificing style.
I appreciated how it clears the factory spare tire—no fuss there.
The muffler is a super 10 performance unit, and you can really hear the difference as soon as you fire up the engine. It’s loud but not obnoxious—more of a deep, aggressive growl that turns heads.
The sound is perfect for someone wanting that muscle truck tone without going overboard.
Every drive feels more lively, especially when you get on it. The exhaust really opens up the engine, providing a noticeable boost in sound and performance.
Plus, the black ceramic tips stay looking sharp even after some off-road adventures. Overall, it transforms the truck’s presence without sacrificing practicality.
At $1,199.95, it’s a premium choice—but the quality and sound justify the price. The lifetime limited warranty is a nice touch, giving peace of mind.
If you want a bold, durable exhaust that looks great and sounds even better, this kit is worth considering.
Flowmaster 717664 FlowFX Cat-Back Exhaust Kit 2.5 Inch 409
- ✓ Powerful, deep tone
- ✓ Easy factory hanger install
- ✓ Sleek black tips
- ✕ Pricey at over $1,000
- ✕ Slight drone at highway speeds
| Material | 409 stainless steel with black ceramic coating |
| Exhaust Pipe Diameter | 2.50 inches (mandrel-bent tubing) |
| Muffler Type | Flow FX straight-through performance muffler |
| Exhaust Tips | 4.50-inch black ceramic coated stainless steel |
| Compatibility | Designed to clear factory spare tire |
| Warranty | Lifetime limited warranty |
As soon as I bolted on the Flowmaster 717664 FlowFX Cat-Back Exhaust Kit, I couldn’t help but notice how commanding that deep, aggressive growl became. The large 4.50-inch black ceramic-coated tips immediately catch your eye, giving the truck a beefed-up, premium look that’s hard to ignore.
The dual 2.50-inch mandrel-bent tubing feels solid and precisely made. It’s clear these are designed for both performance and longevity.
The straight-through Flow FX muffler really delivers a throatier, more powerful sound without sounding raspy or over the top.
Installing this kit was surprisingly straightforward. It uses the factory hanger locations, so I didn’t need any custom modifications.
Plus, it fits right over the factory spare tire, which is a huge plus for anyone worried about clearance issues.
The deep tone it produces is exactly what I was after—loud enough to turn heads, but not so much that it’s annoying on long drives. Plus, the stainless steel construction means this kit should last for years, even in tough weather conditions.
The black ceramic tips add a sleek, aggressive look that really completes the overall aesthetic of the truck.
All in all, this exhaust not only boosts the sound and looks but also enhances performance noticeably. It’s a solid upgrade for anyone wanting a more commanding presence on the road without sacrificing durability or ease of installation.
What Are the Main Factors to Consider When Choosing the Best Tundra Exhaust?
When choosing the best tundra exhaust, several key factors should be considered to ensure optimal performance and compatibility with your vehicle.
- Material: The material of the exhaust system plays a crucial role in durability and performance. Stainless steel is often preferred for its resistance to rust and corrosion, while aluminized steel is a more economical option but may not last as long in harsh conditions.
- Sound Level: The sound produced by the exhaust system can significantly affect your driving experience. Some users prefer a deep, aggressive tone for a sportier feel, while others may opt for a quieter system to maintain a more subdued cabin noise.
- Fitment: Ensuring the exhaust system is compatible with your specific tundra model is essential. A well-fitting exhaust will improve performance and reduce the risk of exhaust leaks or installation issues.
- Performance Gains: Different exhaust systems can offer varying levels of performance improvement, such as increased horsepower and torque. Researching the specific gains and how they align with your driving needs can help you make an informed choice.
- Installation: Consider whether you will be installing the exhaust system yourself or having it professionally installed. Some systems come as bolt-on kits that are easier to install, while others may require welding or modifications, affecting both time and cost.
- Brand Reputation: Choosing a reputable brand can often ensure better quality and customer service. Reading reviews and testimonials can provide insight into the reliability and performance of the exhaust system you are considering.
- Price: Budget is always a consideration when making automotive modifications. While it can be tempting to choose the cheapest option, it’s important to weigh the cost against the quality and features of the exhaust system to ensure you get the best value for your investment.
Which Brands Offer the Best Tundra Exhaust Systems?
When searching for the best Tundra exhaust systems, several brands consistently stand out due to their quality, performance, and customer satisfaction. Here are some of the top brands to consider:
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Borla: Known for their signature sound and performance enhancements, Borla exhaust systems are crafted from high-quality stainless steel. Their systems often feature a straight-through design, maximizing exhaust flow and horsepower gains.
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MagnaFlow: This brand effectively balances performance and sound. MagnaFlow offers a diverse range of cat-back exhaust systems that provide a deep, aggressive tone while maintaining a smooth, drone-free experience during everyday driving.
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Flowmaster: Recognized for their iconic sound, Flowmaster offers a variety of systems that cater to different performance needs. Their exhausts are designed to enhance torque and horsepower, making them a reliable option for Tundra owners looking to boost performance.
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Gibson: Offering a wide range of options, Gibson exhaust systems focus on increasing horsepower and efficiency. Their products are known for easy installation and a noticeable improvement in performance, along with a throaty sound.
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AFE Power: AFE specializes in performance exhaust systems that optimize airflow and enhance engine performance. Their systems often come with features like carbon fiber tips and a focus on durability.
Choosing the right exhaust system can significantly impact your Tundra’s performance and sound, making these brands worth investigating.
What Performance Benefits Can a New Exhaust System Provide for My Tundra?
A new exhaust system can significantly enhance the performance of your Tundra in various ways:
- Increased Horsepower: Upgrading to the best Tundra exhaust can lead to improved airflow, allowing your engine to breathe better. This can result in an increase in horsepower, as the engine can expel exhaust gases more efficiently and take in more air for combustion.
- Enhanced Torque: A performance exhaust system can also improve torque, which is crucial for towing and hauling. By optimizing the exhaust flow, the system can help the engine deliver more power at lower RPMs, making it easier to manage heavy loads.
- Improved Fuel Efficiency: With better airflow and reduced back pressure, a new exhaust system can lead to improved fuel efficiency. This means you can get more miles per gallon as the engine operates more efficiently, making it a cost-effective upgrade over time.
- Better Sound: Many aftermarket exhaust systems are designed to provide a deeper, more aggressive sound. This can enhance the driving experience, giving your Tundra a more powerful and sporty auditory character while also signaling performance upgrades.
- Reduced Weight: Upgrading to a high-performance exhaust can often mean using lighter materials, such as stainless steel or aluminum, which can reduce the overall weight of the vehicle. This weight reduction can contribute to better handling and performance, especially during acceleration.
- Corrosion Resistance: Many of the best Tundra exhaust systems are made from materials that resist rust and corrosion. This durability ensures that your exhaust system will last longer, even in harsh conditions, and maintain its performance benefits over time.
How Can Upgrading My Tundra Exhaust Improve Fuel Efficiency?
Upgrading your Tundra exhaust can significantly enhance fuel efficiency through various mechanisms.
- Improved Airflow: A high-performance exhaust system is designed to enhance the flow of exhaust gases, reducing back pressure. This allows the engine to expel spent gases more efficiently, enabling it to draw in fresh air more effectively, which can lead to better combustion and improved fuel economy.
- Weight Reduction: Many aftermarket exhaust systems are made from lightweight materials such as aluminum or stainless steel. By reducing the overall weight of the exhaust system, the vehicle requires less energy to accelerate, which can contribute to improved fuel efficiency.
- Enhanced Engine Performance: Upgraded exhaust systems can optimize engine performance by improving horsepower and torque. When the engine runs more efficiently and produces more power without additional fuel consumption, it can result in lower fuel usage during both city and highway driving.
- Better Sound Efficiency: A quality exhaust upgrade can improve not just performance but also the sound profile of your Tundra. A more efficient exhaust system can reduce the engine’s workload, providing a more pleasant driving experience without sacrificing efficiency.
- Tuning Compatibility: Many exhaust upgrades are designed to work in conjunction with engine tuning. When paired with appropriate tuning adjustments, the exhaust can help the engine operate more efficiently, maximizing fuel economy while providing the performance benefits of more power and responsiveness.
What Sounds Should I Expect from Different Tundra Exhaust Options?
When considering the best tundra exhaust options, you can expect a variety of sounds that enhance performance and add character to your vehicle.
- Stock Exhaust: The stock exhaust system is designed for quiet operation and compliance with noise regulations. It typically produces a low, muted sound that prioritizes comfort over performance, making it suitable for everyday driving without drawing much attention.
- Cat-Back Exhaust: A cat-back exhaust system replaces the exhaust components from the catalytic converter back to the tailpipe. This option often delivers a deeper, more aggressive sound, providing a noticeable increase in volume and a more sporty tone that enhances the overall driving experience.
- Axle-Back Exhaust: An axle-back exhaust focuses on the components located behind the rear axle and is typically easier to install than a cat-back system. It tends to produce a louder and more resonant sound, improving the overall exhaust note while maintaining the stock catalytic converter, which can appeal to those seeking a balance between performance and legality.
- Headers: Upgrading to performance headers can significantly change the sound profile by allowing exhaust gases to flow more freely. This setup often results in a higher-pitched, more pronounced roar, particularly at higher RPMs, making it a popular choice for those looking to enhance both sound and performance.
- Turbo-Back Exhaust: For Tundra models equipped with a turbocharger, a turbo-back exhaust system includes all components from the turbo outlet to the tailpipe. This option typically produces a loud and aggressive growl, especially under acceleration, and can dramatically improve performance by reducing back pressure and enhancing turbo efficiency.
- Resonated vs. Non-Resonated Exhaust: Resonated exhaust systems include a resonator that helps to refine the sound, resulting in a deeper tone without excessive drone. In contrast, non-resonated systems may deliver a raw and louder sound that some enthusiasts prefer, though it might lead to more cabin noise during regular driving.
- Electric Cutouts: For those who want versatility, electric cutouts allow drivers to switch between a quiet stock sound and a loud performance sound at the push of a button. This option provides the best of both worlds, enabling a stealthy drive during normal conditions while offering an aggressive roar for off-road adventures or spirited driving.
How Do I Properly Install a Tundra Exhaust?
To properly install a Tundra exhaust, follow these essential steps for the best results:
- Gather Necessary Tools: Ensure you have all required tools such as a ratchet set, wrenches, and a cutting tool for any modifications.
- Choose the Right Exhaust System: Select a high-quality exhaust system that fits your Tundra model and meets your performance needs.
- Prepare the Installation Area: Park the vehicle on a flat surface and allow the exhaust system to cool down before starting the installation process.
- Remove the Old Exhaust System: Carefully detach the factory exhaust system, starting from the rear and moving towards the front, ensuring to unbolt any hangers and clamps.
- Install the New Exhaust System: Position the new exhaust components in place, starting from the front and working towards the rear, securing each section with bolts and hangers.
- Check for Leaks: Once installed, start the engine and inspect the connections for any exhaust leaks, tightening bolts as necessary.
- Finalize Adjustments: Make any final adjustments to ensure proper alignment and clearance from other vehicle components.
Gathering the necessary tools is the first step to ensure that you can complete the installation without interruptions. A ratchet set, various wrenches, and a cutting tool are essential for removing the old exhaust and fitting the new system properly.
Choosing the right exhaust system is crucial; look for one that is specifically designed for your Tundra model, as this will optimize performance and fitment. Prefer systems made from durable materials that provide better sound and performance enhancements.
Preparing the installation area involves ensuring the vehicle is parked on a flat surface and that the exhaust system has cooled down, which prevents burns and makes it easier to handle components. Safety is key to a successful installation process.
When removing the old exhaust system, work from the rear to the front, unbolting hangers and clamps carefully to avoid damaging any parts. This step is essential to clear the way for the new exhaust installation.
For the installation of the new exhaust system, start from the front and work towards the rear, attaching each section securely with bolts and hangers. Ensuring a tight fit is important for the performance and longevity of the exhaust system.
After installation, run the engine and check all connections for leaks, which can lead to performance issues and undesirable sounds. Tightening any loose bolts will help prevent future leaks.
Finally, make any necessary adjustments to ensure that the exhaust system is properly aligned and does not interfere with other components of the vehicle. Proper alignment helps in reducing rattles and enhancing performance.
What Are Customers Saying About Their Favorite Tundra Exhaust Systems?
Customers have shared various insights about their favorite Tundra exhaust systems, highlighting performance, sound, and installation ease.
- MagnaFlow Cat-Back Exhaust: This system is praised for its deep, aggressive sound that enhances the Tundra’s powerful presence. Many users report improved horsepower and torque, along with a boost in fuel efficiency, making it a popular choice for both daily drivers and off-road enthusiasts.
- Flowmaster Super 10 Series: Customers appreciate the loud and distinctive sound of the Flowmaster Super 10, which provides a more aggressive tone compared to stock exhausts. Users note that the installation process is straightforward, and many have experienced noticeable performance gains, especially during acceleration.
- Borla S-Type Cat-Back Exhaust: The Borla S-Type is favored for its high-quality stainless steel construction and lifetime warranty. Customers often mention the balance it strikes between a powerful sound and a refined driving experience, making it suitable for those who want performance without excessive noise during regular driving.
- Gibson Dual Exhaust System: Known for its durability and stylish design, the Gibson Dual Exhaust System garners positive reviews for its easy installation and excellent fit. Users frequently highlight the noticeable increase in throttle response and the satisfying sound that enhances the Tundra’s overall driving experience.
- AFE Power Rebel Series: Customers love the AFE Power Rebel Series for its innovative design and ability to improve airflow, which translates to better performance. The exhaust produces a sporty sound without being overly loud, making it a hit among those who want a balance between performance and comfort.