FLOWMASTER 817424 Cat Dual Rear Exit American Mild Mod 700042024674 Mild/mod 409S Rear/side

( Brand: Flowmaster ), ( Part Type: Exit ), ( Manufacturer Part Number: 817424 ), ( Item Length: 58.50 ), ( Fitment Type: Performance/custom ), ( UPC: 700042024674 )

Review FLOWMASTER Cat back System Dual Rear/side Exit American Thunder-mild/mod fits THUNDER

The Flowmaster 817424 Cat-Back Exhaust System with Dual Rear/Side Exit and American Thunder Mild/Mod design is a high-performance aftermarket exhaust solution for American muscle cars seeking enhanced power and a distinctive sound. This system is meticulously engineered to provide an optimal balance between power gains, improved exhaust flow, and an iconic exhaust note.

The Cat-Back designation signifies that this exhaust system replaces the entire rear section of your vehicle's exhaust system, starting from the catalytic converters. This design offers significant gains in power and torque, as it reduces backpressure in the exhaust system, allowing the engine to breathe more efficiently.

Made from premium 409 Stainless Steel, this system is built to last. The 409 material is known for its durability, resistance to corrosion, and ability to maintain its appearance even in harsh environments. The system's polished finish not only looks great but also protects the stainless steel from the elements.

The American Thunder Mild/Mod exhaust tip design is a hallmark of Flowmaster's commitment to providing unique, high-performance exhaust systems. These tips feature a 3-inch diameter, providing an aggressive and menacing look while optimizing exhaust flow. The dual rear and side exit configuration adds an element of customization and style, making this exhaust system a standout addition to any American muscle car.

The mild/mod exhaust note provides an ideal balance between the classic Flowmaster sound and a more subtle, refined tone. This makes the 817424 Cat-Back Exhaust System a versatile choice for those who want to enhance their vehicle's performance without sacrificing the comfort of a quieter exhaust.

Installing this exhaust system is a relatively straightforward process, with most applications requiring only basic hand tools. The system comes complete with all necessary mounting hardware, making installation as hassle-free as possible.

In summary, the Flowmaster 817424 Cat-Back Exhaust System with Dual Rear/Side Exit and American Thunder Mild/Mod design is an excellent choice for those seeking a high-performance, durable, and stylish exhaust solution for their American muscle car. With its combination of power gains, improved exhaust flow, and distinctive sound, this system is sure to elevate the driving experience for any enthusiast.

The Flowmaster 817424 Cat-Back 409S Dual Rear/Side Exit American Thunder muffler is a popular aftermarket exhaust system for American muscle cars. This exhaust system is known for its unique sound and aesthetic appeal. Here are some pros and cons of buying this exhaust system:

1. Unique Sound: The Flowmaster American Thunder muffler is famous for its distinct deep and rumbling sound. It provides a significant improvement in exhaust note quality over the stock exhaust system.

2. Improved Performance: This exhaust system is designed to improve the performance of your vehicle by reducing backpressure and allowing for better exhaust flow. It can result in increased horsepower and torque.

3. Visual Appeal: The dual rear/side exhaust exit design looks great on American muscle cars and adds to their overall aesthetic appeal.

4. Durable: This exhaust system is made from high-quality materials, including stainless steel, and is designed to last for a long time.

5. Easy Installation: The Cat-Back exhaust system is relatively easy to install compared to other exhaust upgrades. It usually takes around 2-4 hours to install, depending on the vehicle.

1. Loud: If you are looking for a quiet exhaust system, then this may not be the best option for you. The Flowmaster American Thunder muffler is quite loud and may not be suitable for those who prefer a more subtle exhaust note.

2. Cost: This exhaust system is on the pricier side, especially when compared to other aftermarket exhaust options. It may not be within everyone's budget.

3. Drone: At certain RPMs, the exhaust system can produce a noticeable drone or resonance, which some people may find annoying.

4. Fitment Issues: Some customers have reported fitment issues, particularly with the exhaust tips not lining up perfectly or the exhaust not clearing the ground in some instances.

In conclusion, the Flowmaster 817424 Cat-Back 409S Dual Rear/Side Exit American Thunder muffler is a high-quality exhaust system that offers a unique sound, improved performance, and visual appeal. However, it is also quite loud, and some customers have reported fitment issues. It is a significant investment, and potential buyers should weigh the pros and cons carefully before making a decision.

If you are looking for a loud, powerful exhaust system with a unique sound and visual appeal, then the Flowmaster American Thunder muffler may be the right choice for you. However, if you prefer a quieter exhaust system or are on a tight budget, then you may want to consider other options. Ultimately, the decision comes down to personal preference and what you value most in an aftermarket exhaust system.

part # 817424 prices

• $322.95-$1126.95

specifications frazzlekits:

• for models: Thunder
• brand: Flowmaster
• part type: Exit
• manufacturer part number: 817424
• item length: 58.50
• fitment type: Performance/custom
• upc: 700042024674

shipping frazzlekits:

• cost: $0.00
• type: Fixed
• service: Standard
• class: Standard
• transit: 4-9 Days

seller frazzlekits:

• # reviews: 71447
• rating: 99.4%

returns frazzlekits:

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

general frazzlekits:

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

payments frazzlekits:

• other
• credit card: Visa
• wallet: Google-pay

offer frazzlekits:

• options: Ship-to-home
• quantity: 1
• started: January 24, 2026
• availability: In Stock
• sold: 0

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