FLOWMASTER 818113 American Cat Exhaust 090127615539

( Brand: Flowmaster ), ( Type: Cat-back ), ( Material: 409 Stainless Steel ), ( Finish: Natural ), ( UPC: 090127615539 ), ( Manufacturer Part Number: 818113 ), ( California Prop 65 Warning: Nickel )

Review FLOWMASTER American Cat back Exhaust System fits THUNDER

The Flowmaster American Thunder 818113 Cat-Back Exhaust System is a high-performance aftermarket exhaust solution designed to enhance the sound and appearance of your vehicle while improving its overall performance. This system is specifically engineered for select Ford, Mustang, and Lincoln models, providing a perfect fit and finish.

The heart of this system is its 409S series mufflers, which are known for their deep, powerful exhaust note. These mufflers utilize Flowmaster's signature "Cannon" design, which features a series of internal tubes that provide an increased flow area for improved exhaust gas velocity. This results in a more efficient exhaust system that reduces backpressure and allows your engine to breathe more freely.

The American Thunder Cat-Back Exhaust System is constructed from premium 409 stainless steel, which is highly resistant to corrosion and rust. This ensures that the system will maintain its appearance and performance for years to come, even in the harshest driving conditions.

This exhaust system also features polished, 3-inch mandrel-bent tubing, which provides a smooth, unrestricted flow for exhaust gases. The system comes with all necessary hardware for installation, including new exhaust mounts and hangers.

Additionally, the American Thunder Cat-Back Exhaust System features a straight-through design, which eliminates the need for restrictive resonators or other muffling components. This results in a free-flowing exhaust system that delivers a bold, aggressive exhaust note that is sure to turn heads.

In summary, the Flowmaster American Thunder 818113 Cat-Back Exhaust System is a high-performance aftermarket exhaust solution that is specifically designed for select Ford, Mustang, and Lincoln models. This system is constructed from premium 409 stainless steel and features Flowmaster's signature "Cannon" mufflers for improved performance and a deep, powerful exhaust note. The system comes with all necessary hardware for installation and is backed by Flowmaster's limited lifetime warranty.

The Flowmaster American Thunder cat-back exhaust system is a popular choice among car enthusiasts for its unique sound and performance enhancement. Here are some pros and cons to help you make an informed decision:

1. Unique Sound: The Flowmaster American Thunder exhaust system is known for its distinctive and powerful exhaust note. It provides a deep, resonant sound that is pleasing to many car enthusiasts.

2. Performance Improvement: The exhaust system can help improve the performance of your vehicle by reducing back pressure and allowing for better exhaust flow. This can lead to increased horsepower and torque.

3. Durability: Flowmaster exhaust systems are made from high-quality materials, including mandrel-bent tubing and stainless steel mufflers. They are designed to last and withstand the rigors of regular use.

4. Easy Installation: The cat-back exhaust system is relatively easy to install, as it only requires the removal of the stock exhaust system. Many customers have reported that the installation process was straightforward and did not require any major modifications.

5. Improved Fuel Economy: Some customers have reported that the Flowmaster American Thunder exhaust system has helped improve their vehicle's fuel economy. While this may not be a significant improvement for all vehicles, it can be a nice bonus.

1. Cost: The Flowmaster American Thunder cat-back exhaust system is not a cheap upgrade. It can be a significant investment, especially for those on a tight budget.

2. Loudness: The exhaust system is known for its loud and powerful exhaust note. While some people find this appealing, others may find it too loud for their liking. If you live in a residential area or have neighbors close by, this could be a concern.

3. Drone: At lower RPMs, some customers have reported that the exhaust system can produce a noticeable drone or rumble. This can be annoying for some people, especially during long drives.

4. Weight: The stainless steel construction of the exhaust system can add significant weight to your vehicle. This can have an impact on fuel economy and handling.

The Flowmaster American Thunder cat-back exhaust system offers a unique and powerful exhaust note, as well as performance improvements and durability. However, it comes with some drawbacks, including cost, loudness, drone, and weight. Ultimately, the decision to purchase this exhaust system depends on your personal preferences and priorities. If you are looking for a powerful exhaust note and performance improvements, and can afford the investment, then the Flowmaster American Thunder exhaust system may be a good choice for you. However, if you are sensitive to noise or are looking for a quieter exhaust system, then you may want to consider other options.

If you are considering purchasing the Flowmaster American Thunder cat-back exhaust system, I would recommend doing some research and reading reviews from other customers to get a better understanding of the potential benefits and drawbacks. You may also want to consider listening to recordings of the exhaust note to determine if it is something that appeals to you. Additionally, it may be worth considering alternative exhaust systems with similar performance improvements but different exhaust notes or design features. Ultimately, the decision is yours, but I hope this information helps you make an informed choice.

part # 818113 price

• $1299.95

specifications frazzlekits:

• for models: Thunder
• brand: Flowmaster
• type: Cat-back
• material: 409 Stainless Steel
• finish: Natural
• upc: 090127615539
• manufacturer part number: 818113
• california prop 65 warning: Nickel

seller frazzlekits:

• # reviews: 18725
• rating: 99.4%

shipping frazzlekits:

• type: Fixed
• service: UPS Ground
• carrier: UPS
• cost: $0.00
• transit: 3-6 Days
• class: Standard

payments frazzlekits:

• other
• credit card: Discover
• wallet: Apple-pay

returns frazzlekits:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer frazzlekits:

• options: Ship-to-home
• quantity: 10
• sold: 0
• availability: In Stock
• started: January 12, 2026

general frazzlekits:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Exhaust System Kits

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