Flowmaster
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Flowmaster 17421 American Thunder Axle-Back Exhaust Kit 2.5 Inch Aluminized Steel 4 Inch Polished 304 Stainless Steel Tips Compatible with 2005-2009 Ford Mustang 4.0L V6 Coupe or Convertible
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Flowmaster 17421 American Thunder Axle-Back Exhaust Kit 2.5 Inch Aluminized Steel 4 Inch Polished 304 Stainless Steel Tips Compatible with 2005-2009 Ford Mustang 4.0L V6 Coupe or Convertible
Flowmaster 17421 American Thunder Axle-Back Exhaust Kit 2.5 Inch Aluminized Steel 4 Inch Polished 304 Stainless Steel Tips Compatible with 2005-2009 Ford Mustang 4.0L V6 Coupe or Convertible
Item #: 5082270

Flowmaster 17421 American Thunder Axle-Back Exhaust Kit 2.5 Inch Aluminized Steel 4 Inch Polished 304 Stainless Steel Tips Compatible with 2005-2009

89% of respondents would recommend this to a friend

Item #: 5082270

SHP 884

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*All items will import from US

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What Stands Out

Premium Material
Crafted from aluminized steel with polished 304 stainless steel tips, this exhaust kit offers durability and a sleek finish, ensuring longevity and aesthetic appeal for Ford Mustang owners.
Performance Enhancement
Designed to improve exhaust flow, the kit boosts horsepower and torque, delivering a thrilling driving experience for enthusiasts seeking performance upgrades for their 2005-2009 Mustang.
Easy Installation
This axle-back exhaust kit features a straightforward design that allows for quick installation, making it accessible for DIYers and reducing labor costs for professional installation.

Product Details

Enhance the performance of your Ford Mustang V6 Amt with the Flowmaster 17421 Axle-Back Exhaust System. Made from 16-gauge mandrel-bent aluminized steel, this system delivers a moderate interior tone and an exterior sound that matches the Mustang's powerful image. Experience improved throttle response, power, and mileage. Easy to install with all necessary parts included. Fits both coupes and convertibles. Shop at Ubuy Saint Helena
Brand NameFlowmaster
Manufacturer Part Number17421
Number of Items1
ManufacturerFlowmaster
UPC700042020584
Global Trade Identification Number00700042020584
OEM Equivalent Part Number17421
Included ComponentsFlowmaster 17421 Axle-back System - Single Rear Exit - American Thunder - Moderate Sound
Item Weight17.7 pounds (8.03 kg)
Item Type NameFlowmaster 17421 Axle-back System - Single Rear Exit - American Thunder - Moderate Sound
Model Number17421
Part Interchange Info17421
Unit Count1 Count
Compatible with Vehicle TypeCar
Automotive Fit TypeVehicle Specific Fit
ColorBlack
Material TypePlastic
BrandFlowmaster
MaterialPlastic
Vehicle Service TypeCar

Who Should Buy?

Suitable For
  • Car Enthusiasts

    Those who enjoy modifying and enhancing their vehicle's performance and sound will appreciate this premium exhaust kit.

  • Daily Drivers

    Owners using a 2005-2009 Ford Mustang V6 looking for improved exhaust sound and aesthetics can benefit greatly.

  • Custom Projects

    Individuals involved in custom car projects who require high-quality parts that improve performance and style will find this useful.

Not Suitable For
  • Budget Buyers

    Customers looking for a low-cost option may consider this exhaust kit expensive compared to standard alternatives.

Product Description

Flowmaster 17421 American Thunder Axle-Back Exhaust Kit 2.5 Inch Aluminized Steel 4 Inch Polished 304 Stainless Steel Tips Compatible with 2005-2009 Ford Mustang 4.0L V6 Coupe or Convertible

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Flowmaster 17421 American Thunder Axle-back Exhaust System?

    Answer: The Flowmaster 17421 American Thunder Axle-back Exhaust System is a performance exhaust solution designed specifically to enhance the exhaust sound and performance of your vehicle. This system utilizes a unique chambered design that produces a deep, aggressive tone while improving exhaust flow. It's perfect for car enthusiasts who desire a sporty sound without compromising daily drivability. Consider it for your muscle car or truck to elevate its auditory signature and performance metrics.
  • Question: What vehicles are compatible with the Flowmaster 17421 Exhaust System?

    Answer: The Flowmaster 17421 American Thunder Axle-back Exhaust System is compatible with a variety of popular vehicle models. This usually includes specific types of Ford Mustang and Chevrolet vehicles, among others. Always consult product specifications or manufacturer guidelines to ensure a proper fit with your particular model year. Installing this system can significantly enhance your vehicle's driving experience, giving it that signature performance sound while optimizing rear exhaust deployment for better horsepower.
  • Question: How does the installation process work for the Flowmaster 17421?

    Answer: Installing the Flowmaster 17421 American Thunder Axle-back Exhaust System typically involves a straightforward bolt-on process. Most vehicles do not require cutting or welding, allowing for easier installation with basic hand tools. This system often comes with all necessary hardware and detailed instructions. After installation, drivers should notice an enhanced exhaust tone and improved aesthetics at the rear of the vehicle, making it a rewarding project for DIY enthusiasts or even casual car owners.
  • Question: Will the Flowmaster 17421 Axle-back Exhaust System affect my vehicle's performance?

    Answer: Yes, the Flowmaster 17421 American Thunder Axle-back Exhaust System is designed to improve both sound and performance. By enhancing exhaust flow, this system can contribute to increased horsepower and torque at higher RPMs. Additionally, its specific design minimizes back pressure which is critical for maximizing engine efficiency. This improvement is particularly beneficial for spirited driving or track days, allowing for a more dynamic driving experience.
  • Question: What sound characteristics can I expect from the Flowmaster 17421?

    Answer: The Flowmaster 17421 American Thunder Axle-back Exhaust System is known for its deep, aggressive tone that is sure to turn heads. This system is engineered to deliver a classic muscle car sound that is both rich and resonant, without being overly intrusive at cruising speeds. For those who appreciate distinctive auditory cues while driving, this exhaust system enhances the overall experience, especially during acceleration and wide-open throttle situations.
  • Question: Is the Flowmaster 17421 durable over time?

    Answer: Yes, the Flowmaster 17421 American Thunder Axle-back Exhaust System is made from high-quality materials designed to withstand harsh conditions. Its stainless steel construction ensures resistance to rust and corrosion, providing longevity and maintaining its appearance over time. Users can expect this system to hold up well under various driving conditions, offering both aesthetic value and performance reliability for years to come.
  • Question: Can I customize the Flowmaster 17421 system further?

    Answer: Absolutely! The Flowmaster 17421 American Thunder Axle-back Exhaust System can be combined with other aftermarket parts for a more tailored performance upgrade. Consider pairing it with a cold air intake or performance headers to further enhance horsepower and sound. Additionally, custom tips or resonance chambers can also provide a unique look and a personalized exhaust note, allowing enthusiasts to make their vehicle truly one-of-a-kind.
  • Question: Does the installation of the Flowmaster 17421 require professional assistance?

    Answer: While many users successfully install the Flowmaster 17421 American Thunder Axle-back Exhaust System themselves, professional installation is recommended for those uncertain about their mechanical skills. A professional can ensure that the system is properly fitted, which optimizes its performance and sound. However, if you’re comfortable with basic automotive tasks, this user-friendly system makes it an accessible project for many car owners.
  • Question: What are the weight benefits of the Flowmaster 17421 Exhaust System?

    Answer: The Flowmaster 17421 American Thunder Axle-back Exhaust System is lighter than many stock exhaust systems, contributing to an overall reduction in vehicle weight. This reduction enhances performance by improving acceleration and agility. Additionally, a lighter exhaust system helps in achieving better balance, which is beneficial for handling during spirited driving or cornering, thereby improving the overall driving dynamics.
  • Question: Where can I buy the Flowmaster 17421 American Thunder Axle-back Exhaust System?

    Answer: You can buy the Flowmaster 17421 American Thunder Axle-back Exhaust System through Ubuy in Saint Helena. Ubuy offers a vast selection of automotive parts and accessories, making it easy to find and order this specific exhaust system, ensuring you get a quality product directly from a reliable source.

Flowmaster Axle-Back Systems 17421 Editorial Review

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SHP 884

Order now and get it around Saturday, September 19

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