FLOWMASTER 817479 Rear Cat Dual Exit American Agg 700042022960 409S

( Brand: Flowmaster ), ( Part Type: Exit ), ( Manufacturer Part Number: 817479 ), ( UPC: 700042022960 )

Review FLOWMASTER Cat back System Dual Rear Exit American Agg fits THUNDER

The Flowmaster 817479 Cat-Back Exhaust System with American Thunder Agg Dual Rear Exits is a high-performance aftermarket exhaust solution designed specifically for American muscle cars. This system is part of Flowmaster's 409 series, which is known for its powerful and distinctive sound.

This Cat-Back exhaust system is a complete replacement for the stock exhaust system, starting from the catalytic converters and extending all the way to the rear bumper. It features large 3.5-inch diameter tubing that reduces backpressure and increases exhaust flow for improved engine performance. The system also includes a set of dual 4.5-inch diameter rear exhaust tips, which give the car a bold and aggressive appearance.

The American Thunder Agg mufflers used in this system are designed to provide a deep, rumbling exhaust note that is both powerful and pleasing to the ear. They are constructed from a high-flow metal core that allows for maximum exhaust flow while still maintaining a reasonable level of noise. The mufflers also feature a unique internal design that provides a smooth exhaust pulse, resulting in a more even and consistent exhaust note.

This Flowmaster exhaust system is made from premium-grade T-304 stainless steel, which is highly resistant to rust and corrosion. It is also mandrel-bent, ensuring that the tubing maintains a consistent diameter throughout the entire length of the system. This not only improves exhaust flow but also ensures a better fit and a more polished appearance.

Installation of this system is relatively straightforward, with most of the work being done at the rear of the vehicle. However, some modification may be required to the stock exhaust system to accommodate the larger diameter pipes. It is recommended that this installation be performed by a professional exhaust shop or experienced do-it-yourselfer to ensure proper fitment and function.

Overall, the Flowmaster 817479 Cat-Back Exhaust System with American Thunder Agg Dual Rear Exits is an excellent choice for anyone looking to enhance the performance and appearance of their American muscle car. With its large diameter tubing, powerful exhaust note, and premium-grade stainless steel construction, this system is sure to provide years of reliable use and enjoyment.

Pros and Cons of Buying a Flowmaster 817479 Cat-Back Exhaust System (American Thunder Agg Dual Rear Exit)

a. Enhanced Performance: A cat-back exhaust system like the Flowmaster 817479 can improve the overall performance of your vehicle by reducing backpressure and increasing exhaust flow.

b. Better Fuel Efficiency: By improving the engine's efficiency, this exhaust system can potentially lead to better fuel economy.

c. Increased Horsepower: The Flowmaster American Thunder Agg exhaust system is known for adding horsepower to your vehicle by allowing for better exhaust flow and improved engine breathing.

d. Improved Sound: This exhaust system is famous for its distinctive deep, rumbling sound that is preferred by many car enthusiasts.

e. Durability: Flowmaster is known for producing high-quality exhaust systems that can withstand the test of time and harsh driving conditions.

a. Cost: The Flowmaster 817479 cat-back exhaust system can be a significant investment, especially when compared to other aftermarket exhaust options.

b. Installation Complexity: Installing a cat-back exhaust system can be a challenging process that may require professional assistance or extensive DIY knowledge.

c. Loudness: The increased exhaust flow and design of this exhaust system can result in a louder exhaust note that may not be ideal for those who prefer a quieter ride.

d. Potential Increased Emissions: The Flowmaster American Thunder Agg exhaust system may increase emissions due to the unrestricted exhaust flow, which could potentially result in failed emissions tests in certain jurisdictions.

The Flowmaster 817479 Cat-Back Exhaust System (American Thunder Agg Dual Rear Exit) is an excellent investment for car enthusiasts who prioritize improved performance, a distinctive exhaust note, and a bold look. However, it comes with a significant cost, complex installation, potential increased loudness, and potential emissions concerns. Ultimately, the decision to purchase this exhaust system depends on your personal preferences, driving style, and budget. If you are willing to invest in the system and can handle the potential cons, then it could be an excellent addition to your vehicle. Otherwise, you may want to consider alternative exhaust options that better suit your needs and budget.

part # 817479 prices

• $200.62-$921.95

specifications frazzlekits:

• for models: Thunder
• brand: Flowmaster
• part type: Exit
• manufacturer part number: 817479
• upc: 700042022960

returns frazzlekits:

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

seller frazzlekits:

• # reviews: 15449
• rating: 99.2%

general frazzlekits:

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

payments frazzlekits:

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

shipping frazzlekits:

• transit: 2-4 Days
• carrier: FedEx
• type: Fixed
• service: FedEx Ground or FedEx Home Delivery
• class: Standard
• cost: $0.00

offer frazzlekits:

• options: Ship-to-home
• started: June 3, 2025
• quantity: 1
• availability: In Stock
• best offers: True
• sold: 0

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