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Flowmaster 817541 - American Thunder Cat Back Exhaust System

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$921.59

$1,023.99

You save: $102.40 (10%) off MSRP

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This part fits

  1. 2019 GMC Sierra 3500 HD SLT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  2. 2019 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  3. 2019 GMC Sierra 3500 HD Denali 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  4. 2019 GMC Sierra 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  5. 2019 Chevrolet Silverado 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  6. 2019 GMC Sierra 3500 HD SLE 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  7. 2018 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  8. 2018 GMC Sierra 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  9. 2018 Chevrolet Silverado 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  10. 2018 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  11. 2017 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  12. 2017 GMC Sierra 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  13. 2017 Chevrolet Silverado 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  14. 2017 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  15. 2016 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  16. 2016 GMC Sierra 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  17. 2016 Chevrolet Silverado 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  18. 2016 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  19. 2015 Chevrolet Silverado 2500 HD High Country 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  20. 2015 Chevrolet Silverado 2500 HD LT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  21. 2015 Chevrolet Silverado 2500 HD LTZ 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  22. 2015 Chevrolet Silverado 2500 HD WT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  23. 2015 Chevrolet Silverado 3500 HD High Country 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  24. 2015 GMC Sierra 2500 HD Base 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  25. 2015 GMC Sierra 2500 HD Denali 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  26. 2015 GMC Sierra 2500 HD SLE 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  27. 2015 Chevrolet Silverado 3500 HD LT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  28. 2015 Chevrolet Silverado 3500 HD LTZ 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  29. 2015 Chevrolet Silverado 3500 HD WT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  30. 2015 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  31. 2015 GMC Sierra 2500 HD SLT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  32. 2014 GMC Sierra 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  33. 2014 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  34. 2014 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  35. 2013 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  36. 2013 GMC Sierra 2500 HD SLE 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  37. 2013 GMC Sierra 2500 HD SLT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  38. 2013 GMC Sierra 2500 HD WT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  39. 2013 GMC Sierra 2500 HD Denali 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  40. 2013 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  41. 2012 GMC Sierra 2500 HD WT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  42. 2012 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  43. 2012 GMC Sierra 2500 HD SLT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  44. 2012 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  45. 2012 GMC Sierra 2500 HD SLE 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  46. 2012 GMC Sierra 2500 HD Denali 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  47. 2011 Chevrolet Silverado 2500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  48. 2011 GMC Sierra 2500 HD Denali 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  49. 2011 GMC Sierra 2500 HD SLT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  50. 2011 GMC Sierra 2500 HD WT 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  51. 2011 GMC Sierra 3500 HD 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  52. 2011 GMC Sierra 2500 HD SLE 6.0L V8 cid:364 cc:5967 Crew Cab Pickup 78.8 in. bed
  53. show all...
Authorized Dealer

About this product

Part #: 817541

Flowmaster's new American Thunder Cat-back exhaust system for the 2011-2019 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with 6.0L V8 is perfect for the person looking for a moderate to aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel 50 Series HD muffler and dual 3.00 in. DOR/S (Dual Out Rear/ Dual Out Side) stainless steel mandrel bent tailpipes. The system is finished off with beautifully polished 4.00 in. stainless steel tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

More Details

Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Out Rear
Exit PositionDual Out Side
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter3.500 in.
Inlet Inside Diameter4.000 in.
MaterialStainless Steel
Muffler Count1
Muffler Part NumberKit Only
Muffler Series50 Series HD
Outlet Diameter3.000 in.
Outlet Outside Diameter4.000 in.
Single or DualDual
Sound LevelModerate/Aggressive
System TypeCat Back
Tail Pipe Diameter3.000 in.
Tip Diameter4.000 in.
Tip Length13.000 in.
Tip Quantity2
TitleFlowmaster 817541 Cat-back System 409S - Dual Rear/Side Exit-American Thunder-Moderate/Aggressive
Tubing Diameter4.000 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?
I honestly like it really gives the truck a new sound and wakes it up some
View on Wadie'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?
a mix of price and a snapped midpipe
Is this your first time buying from this brand? Did you consider other brands?
first time, looked around a bit
View on Brett's build
Travis Pessina

293

Travis Pessina
2006 Dodge Charger
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?
Price, performance, sound is incredible
Is this your first time buying from this brand? Did you consider other brands?
Yes
Was it easy to install? Any installation tips that will help others?
Professional installed
Once you've had a chance to use the product, did it meet your expectations?
Good price for the performance
View on Travis's build
Gianfranco Estremadoyro

157

Gianfranco Estremadoyro
2009 Ford Mustang
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?
Loudest axlebacks in the market for the 3V with out compromising the "muscle car" sound.
What were you trying to accomplish by adding this product?
Make my car louder.
Was it easy install? Any installation tips that will help others?
Install was easy to do with the car lifted on ramps in my driveway.
Once you’ve had a chance to use the product, did it meet your expectations?
Met all my expectations.
Any additional comments?
I absolutely love this axlebacks and would recommend them to any 3V owner.
View on Gianfranco's build
Logan Salazar

47

Logan Salazar
2011 Ford Mustang
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?
Much better sound and better performance
What were you trying to accomplish by adding this product?
Muscle car sound and look
Was it easy install? Any installation tips that will help others?
Definitely make sure to use lots of grease to slide the parts together and adjust
Once you’ve had a chance to use the product, did it meet your expectations?
It exceeded my expectations exponentially, the raspyness of the exhaust really makes the car stand out.
View on Logan'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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