Flowmaster® 817425 - American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear/Side Exit

2 reviews|Item # mpn854018|Similar Products
$989.95
OUT OF STOCK - Unavailable until further notice
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Product Details

American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear/Side Exit (817425) by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 2.5". Exhaust System Sound: Aggressive / Loud. American Thunder exhaust system is perfect for the person looking for a moderately aggressive sound level outside of the car, while maintaining a mild sound level inside, with all of the performance benefits that you would expect from Flowmaster. American Thunder gives you the classic sound of a Flowmaster chambered exhaust, which is the classic sound of classic American big performance engines. This is a system that gives the most sedate vehicle a performance rumble.

Notes

  • The system comes with Super 50 Series muffler
  • Connects After Factory Catalytic Converter
  • Remember to check your local and state laws regarding vehicle noise restrictions

Specifications

Exhaust System Type: Cat-Back
Exhaust Tubing Material: Stainless Steel
Exit Location: Split Rear/Side
Exit Configuration: Dual
Main Tubing Diameter: 2.5"
Exhaust System Sound: Aggressive / Loud
Muffler Inlet Diameter: 3"
Muffler Outlet Diameter: 2.5"
Muffler Series: Super 50
Muffler Quantity: 1
Tip Quantity: 2
Tip Outlet Diameter: 3"
Hardware Included: Hangers, Mounting Hardware

Includes

  • (1) 3/8" Nut (Part Number HW103)
  • (1) 3/8" lock washer (Part Number HW309)
  • (1) 3/8"x 4" bolt (Part Number HW220)
  • (1) Adapter pipe (Part Number TB468S)
  • (1) Frame Hanger (Part Number 226HA)
  • (1) Left Front Tailpipe (Part Number 16518S)
  • (1) Left Rear Tailpipe (Part Number 16520S)
  • (1) Muffler (Part Number 8530552-Z)
  • (1) Parts kit (Part Number PK535)
  • (1) Right Tailpipe (Part Number 16517S)
  • (1) Rubber hanger (Part Number HA168)
  • (2) 3" clamp (Part Number MC300BS)
  • (2) 3/8" flat washers (Part Number HW303)
  • (2) 7/16" Hanger Keepers (Part Number HW502)
  • (2) Rear Exit Pipe (R/L) (Part Number 16397S)
  • (2) Side Exit Pipe (R/L) (Part Number 16317S)
  • (2) Square spacer (Part Number HA566)
  • (2) Stainless Tip (Part Number ST396)
  • (5) 2 1/2" clamp (Part Number MC250BS)

Features

  • High Quality Performance Sound
  • Increases Torque and Power
  • Mandrel Bent 16 Gauge Tubing
  • Includes Hangers and Hardware for Easy Installation
  • Every System Tuned on Dynamometer

American Thunder gives you exactly the sound that is promised by the name of the series. The exhaust sound of the American Thunder system has become a symbol of American power that is recognized all over the world. American Thunder is the most popular of the Flowmaster exhaust systems, enhancing power, torque, throttle response and mileage for automobile enthusiasts all over the world.

All Flowmaster exhaust systems give the same improvement of performance. All Flowmaster exhaust systems produce a beautiful deep performance tone. Choosing between the five different exhaust systems is not a technical decision – it is all up to your personal taste. It’s A Sound Decision™. The racing origin is evident in every Flowmaster exhaust system. All the five series of systems are tuned for maximum performance. They differ in technology and tuning, and thus in tone and character, giving you a performance engine sound to your personal liking.

Flowmaster exhaust systems employ two unique technologies, the patented Delta Flow and the Laminar Flow. They give different characters of sound and can be tuned to achieve the desired exhaust note. Flowmaster Exhaust System Technology is so versatile and gives such a high degree of control that it is used both by racers, who want maximum power, and by the U.S. Air Force in Stealth applications, where maximum silence and minimum heat emissions are prime considerations.

Be it for a domestic or import truck, SUV, off-road warrior, daily driver, muscle car, euro-spec cruiser or sport compact vehicle, Flowmaster technicians personally hand select the right muffler, tubing size, resonator, and tip to make the process easy for you. Best of all, Flowmaster stainless steel exhaust systems are covered by a Limited Lifetime Warranty; ensuring that your exhaust will last as long as you own your vehicle. If you choose aluminized steel products, Flowmaster backs them up with a 3-year warranty.

Flowmaster® has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster’s founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers." Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.

Part Number:
817425
UPC:
700042024681
Alternate MPN:
817425

Vehicle Fitment

Toyota
Tundra 2000-2006

Reviews

(2)
Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.
Flowmaster® 817425 - American Thunder™ Stainless Steel Cat-Back Exhaust System with Split Rear/Side Exit
/5
1-2 of 2 Reviews
5 of 5
Flowmaster
This exhaust looks and sounds great. Performs exactly as advertised.
Posted by Jonathan (Huntington Beach, CA) / May 16, 20172006 Toyota Tundra
5 of 5
Love It!!!
I was skeptical ordering something like this online but it came right when it was suppose to. My husband (who is far from a mechanic) installed it himself in a few hours with no problems. His truck sounds amazing. I would definitely recommend this product and company.
Posted by Jasmine (Brushton, NY) / August 03, 20122004 Toyota Tundra

Questions and Answers

(0)
If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!
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