FLOWMASTER 817342 Cat Dual Exit American Moderate 700042024896 409S

( Brand: Flowmaster ), ( Part Type: Exit ), ( Manufacturer Part Number: 817342 ), ( Item Length: 65.25 ), ( Fitment Type: Performance/custom ), ( UPC: 700042024896 )

Review FLOWMASTER Cat back System Dual Side Exit American Moderate fits THUNDER

Introducing the Flowmaster 817342 Cat-Back Exhaust System with American Thunder 409s Dual Exits a high-performance solution for those seeking an enhanced driving experience for their American muscle cars. This system, specifically designed for specific makes and models, is engineered to deliver an invigorating exhaust note while providing improved power and efficiency.

The 409s Dual Exits American Thunder system is a cat-back exhaust configuration, which means it begins at the catalytic converter and extends to the exhaust tips. This design allows for the greatest potential for performance gains, as it reduces the restriction from the factory exhaust system. The system features mandrel-bent tubing, ensuring a perfect fitment and minimal exhaust gas restriction.

This Cat-Back Exhaust System boasts a unique 4-inch diameter inlet, expanding to 4.5-inches at the mid-pipe, and then tapering down to 3.5-inches at the outlets. The larger diameter piping enhances the exhaust flow, contributing to increased power and torque. This system also features a polished stainless steel finish, which not only adds a touch of elegance but also provides effective corrosion resistance.

The Flowmaster American Thunder 817342 system comes with two dual-walled, 3.5-inch diameter, slashed-tip exhaust outlets. These tips not only add an aggressive and menacing appearance but also offer the benefits of a dual-wall design. The inner wall is made of stainless steel, while the outer wall is made of a durable, heat-resistant ceramic material. This design ensures a longer tip lifespan and a more uniform exhaust tip temperature.

Installing the Flowmaster 817342 Cat-Back Exhaust System is a relatively straightforward process, with no welding required. The system includes all necessary hardware for a bolt-on installation, making it a popular choice for both professional installers and DIY enthusiasts. By upgrading your exhaust system with the Flowmaster American Thunder 409s Dual Exit Cat-Back Exhaust System, you'll not only enjoy the exhilarating sound but also improve your vehicle's overall performance.

The Flowmaster 817342 Cat-Back 409s Dual Exit American Thunder Moderate exhaust system is a popular aftermarket option for those looking to enhance the performance and sound of their American muscle cars. Here are some pros and cons to consider before making a purchase:

1. Improved Performance: This exhaust system is designed to increase the flow of exhaust gases, which can lead to improved engine performance and horsepower gains.

2. Enhanced Sound: The 409s series is known for its aggressive and deep exhaust note, making it a popular choice for those looking to give their car a more powerful and distinctive sound.

3. Durability: Flowmaster is known for producing high-quality exhaust systems, and the 817342 Cat-Back 409s system is no exception. It is made of premium materials, including mandrel-bent tubing and stainless steel mufflers, for long-lasting durability.

4. Fit and Finish: This exhaust system is specifically designed to fit American muscle cars, and it comes with all necessary hardware for a straightforward installation.

5. Lifetime Warranty: Flowmaster offers a lifetime warranty on this exhaust system, which covers defects in materials and workmanship.

1. Cost: The Flowmaster 817342 Cat-Back 409s Dual Exit American Thunder Moderate exhaust system is a premium product, and it comes with a premium price tag.

2. Installation: Installing an aftermarket exhaust system can be a complex process, and it may require professional installation to ensure proper fitment and function.

3. Loudness: This exhaust system is designed to be loud and aggressive, which may not be suitable for those who prefer a quieter ride.

4. Backpressure: Depending on the specific make and model of your car, installing a cat-back exhaust system may increase backpressure, which can affect fuel economy and performance.

The Flowmaster 817342 Cat-Back 409s Dual Exit American Thunder Moderate exhaust system is a high-quality aftermarket option for those looking to enhance the performance and sound of their American muscle car. While it comes with a premium price tag and may require professional installation, it offers a number of benefits, including improved performance, enhanced sound, durability, and a lifetime warranty. Ultimately, the decision to purchase this exhaust system depends on your personal preferences and priorities, as well as the specific requirements of your vehicle.

If you are looking to give your American muscle car a more aggressive and powerful sound, and you are willing to invest in a high-quality aftermarket exhaust system, the Flowmaster 817342 Cat-Back 409s Dual Exit American Thunder Moderate exhaust system is a great option to consider. Just be prepared for the cost, potential installation challenges, and increased loudness that come with this premium product.

part # 817342 prices

• $200.62-$921.95

specifications frazzlekits:

• for models: Thunder
• brand: Flowmaster
• part type: Exit
• manufacturer part number: 817342
• item length: 65.25
• fitment type: Performance/custom
• upc: 700042024896

offer frazzlekits:

• availability: In Stock
• options: Ship-to-home
• started: July 14, 2025
• sold: 0
• quantity: 1

shipping frazzlekits:

• transit: 3-7 Days
• cost: $0.00
• type: Fixed
• class: Standard
• service: Standard

general frazzlekits:

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

returns frazzlekits:

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

payments frazzlekits:

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

seller frazzlekits:

• # reviews: 65617
• rating: 98.5%

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