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Flowmaster 817282 - American Thunder Header Back Exhaust System

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$568.95

$632.95

You save: $64.00 (10%) off MSRP

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This part fits

  1. 1970 Ford Mustang Base 5.0L V8 cid:302
  2. 1970 Ford Mustang Mach I 7.0L V8 cid:429 cc:7030
  3. 1970 Ford Mustang Mach I 5.0L V8 cid:302
  4. 1970 Ford Mustang Mach I 5.8L V8 cid:351 cc:5753
  5. 1970 Ford Mustang Mach I 7.0L V8 cid:428
  6. 1970 Ford Mustang Mach I 7.0L V8 cid:429
  7. 1970 Ford Mustang Mach I 7.0L V8 cid:428 cc:7014
  8. 1970 Ford Mustang Mach I 5.8L V8 cid:351 cc:5753
  9. 1970 Ford Mustang Mach I 5.8L V8 cid:351 cc:5753
  10. 1970 Ford Mustang Grande 7.0L V8 cid:428 cc:7014
  11. 1970 Ford Mustang Grande 5.0L V8 cid:302
  12. 1970 Ford Mustang Grande 5.8L V8 cid:351 cc:5753
  13. 1970 Ford Mustang Grande 7.0L V8 cid:428
  14. 1970 Ford Mustang Grande 7.0L V8 cid:429
  15. 1970 Ford Mustang Grande 7.0L V8 cid:429 cc:7030
  16. 1970 Ford Mustang Grande 5.8L V8 cid:351 cc:5753
  17. 1970 Ford Mustang Base 7.0L V8 cid:429 cc:7030
  18. 1970 Ford Mustang Base 7.0L V8 cid:428 cc:7014
  19. 1970 Ford Mustang Boss 302 5.0L V8 cid:302
  20. 1970 Ford Mustang Base 5.8L V8 cid:351 cc:5753
  21. 1970 Ford Mustang Base 5.8L V8 cid:351 cc:5753
  22. 1970 Ford Mustang Grande 5.8L V8 cid:351 cc:5753
  23. 1970 Ford Mustang Base 5.8L V8 cid:351 cc:5753
  24. 1970 Ford Mustang Base 7.0L V8 cid:428
  25. 1970 Ford Mustang Base 7.0L V8 cid:429
  26. 1969 Ford Mustang Base 6.4L V8 cid:390 cc:6391
  27. 1969 Ford Mustang Boss 429 7.0L V8 cid:429 cc:7030
  28. 1969 Ford Mustang Base 5.8L V8 cid:351 cc:5753
  29. 1969 Ford Mustang Base 7.0L V8 cid:428 cc:7014
  30. 1969 Ford Mustang Base 7.0L V8 cid:429 cc:7030
  31. 1969 Ford Mustang Base 5.8L V8 cid:351 cc:5753
  32. 1969 Ford Mustang Base 5.0L V8 cid:302
  33. 1969 Ford Mustang Base 5.8L V8 cid:351 cc:5753
  34. 1969 Ford Mustang Base 6.4L V8 cid:390
  35. 1969 Ford Mustang Boss 429 7.0L V8 cid:429
  36. 1969 Ford Mustang Base 7.0L V8 cid:428
  37. 1968 Ford Mustang Base 5.0L V8 cid:302
  38. 1968 Ford Mustang Base 4.7L V8 cid:289 cc:4727
  39. 1968 Ford Mustang Base 7.0L V8 cid:428 cc:7014
  40. 1968 Ford Mustang Base 7.0L V8 cid:427 cc:6997
  41. 1968 Ford Mustang Base 6.4L V8 cid:390 cc:6391
  42. 1967 Ford Mustang Base 6.4L V8 cid:390 cc:6391
  43. 1967 Ford Mustang Base 4.7L V8 cid:289 cc:4727
  44. show all...
Authorized Dealer

About this product

Part #: 817282

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. These systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

More Details

Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Rear
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter2.500 in.
Inlet Inside Diameter2.500 in.
MaterialStainless Steel
Muffler Count2
Muffler Part NumberKit Only
Muffler SeriesSuper 44 Series
Outlet Diameter2.500 in.
Outlet Outside Diameter2.500 in.
Single or DualDual
Sound LevelAggressive
System TypeHeader Back
Tail Pipe Diameter2.500 in.
TitleFlowmaster 817282 Header-back System 409S - Dual Rear Exit - American Thunder - Aggressive Sound
Tubing Diameter2.500 in.
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Other exhaust clips with this muffler on the 2.4L engine. I preffered a custom dual exhaust with two of these over pre made catbacks.
Is this your first time buying from this brand? Did you consider other brands?
First!!!
View on Paul's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Had a friend at a automotive shop that took it off a customers car and was going to throw it away, so I was offered it for $100.
Is this your first time buying from this brand? Did you consider other brands?
Yes. I was actually looking at Gibson exhaust but I couldn't pass up the deal.
Was it easy to install? Any installation tips that will help others?
Easy install. Cutting is required on the factory exhaust and it's a little awkward to remove the stock exhaust by yourself.
Once you've had a chance to use the product, did it meet your expectations?
It's loud and drones some but with a manual you can keep the rpm in the right range to avoid this. Sounds great, almost like a VQ from a 350Z/370Z but a little raspier.
View on Jake's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
Any additional comments?
Stock exhaust, cut a 12in section off after the cats which are gutted. Love the sound, love the look of the exhaust tips so 90% of the exhaust is still intact.
View on Skylar's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Despite for a little 4 cylinder it sounds good
View on Chris's build
Sam Jacobson

451

Sam Jacobson
2013 Dodge Dart
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I wanted an exhaust note on my car and it was a great price for what it is ($439.99)
Is this your first time buying from this brand? Did you consider other brands?
Yes, my expectations were perfect for what I got.
View on Sam's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

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