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Flowmaster®
817409 American Thunder Series Header-Back Exhaust System, Made of Stainless Steel

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$872.95
$1,077.00Save: $204.05(19%)
OR
Manufacturer #817409
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Qty:
1

Highlights

Part:
Exhaust System
Brand:
Flowmaster
Notes:
Includes Super 40 Series Muffler
Material:
Made of Stainless Steel
Series:
American Thunder Series
System Type:
Header-Back
Quantity Sold:
Kit
Warranty:
Lifetime Flowmaster Limited Warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Exit Location:
Exit: Split Rear
Main Piping Diameter:
2.5 in. Main Pipe
Product Fit:
Direct Fit
Recommended Use:
OE Upgrade
Why Buy:
Aggressive Tone Chambered Muffler

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
1968 Buick Skylark
Base
8 Cyl 6.6L
-
1968 Buick Skylark
Custom
8 Cyl 6.6L
-
1968 Chevrolet Chevelle
Base
8 Cyl 5.0L
-
1968 Chevrolet Chevelle
Malibu
8 Cyl 5.4L
-
1968 Chevrolet Chevelle
Malibu
8 Cyl 5.3L
-
Page 1 of 12 | Showing 1 - 5 of 60 results

Product Information

FLOWMASTER AMERICAN THUNDER AGGRESSIVE TONE CHAMBERED MUFFLER EXHAUST SYSTEMS

Flowmaster’s American Thunder aggressive tone chambered muffler exhaust systems include mandrel-bent steel tubing and a chambered muffler that’s fine-tuned to deliver improved torque, horsepower and gas mileage, plus the moderately aggressive rumble you crave for your street machine. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of performance exhaust systems, respected for their design, innovation and engineering.

  • MADE IN USA
  • Offered in aluminized or stainless steel
  • Chambered muffler fine-tunes exhaust tone to moderately aggressive rumble
  • Mandrel-bent tubing allows for continuous airflow
  • Quick and easy installation
  • Direct fit by vehicle year, make and model
  • Proven to improve torque, throttle response, horsepower and fuel economy by rigorous dyno testing
Need help?Call our product expert1-866-529-0412
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Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

0
can i replave the 40 series muffler woth a 50 series in these systems?kevin o.Jun 08, 2023
Best Answer:Hi Kevin, thank you for reaching out. We do not have that information available. Kindly call the manufacturer's tech department at 1-866-464-6553 and tell them what you are trying to accomplish. They can help confirm if it is possible. Have a good one!
Andrew B.STAFFJun 08, 2023
0
Hello, Dave here  Is there a muffler or hot rod shop near Lakewood California that you could recommend that I have this system installed in my 71 Chevelle ? I am running a 383 sbc engine and currently have shorty headers .DavidSep 10, 2021
Best Answer:Hi David, I'm glad to assist you. Unfortunately, we don't have any records of shops in California that we can recommend you with. I hope this helps, and we thank you for inquiring.
Arnel E.STAFFSep 10, 2021