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Flowmaster - American Thunder Cat Back Exhaust System (817664)

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$839.95

$933.95

You save: $94.00 (10%) off MSRP

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  1. 2018 Toyota Tundra 5.7L V8 cid:345 cc:5663 78.7 in. bed
  2. 2018 Toyota Tundra 5.7L V8 cid:345 cc:5663 66.7 in. bed
  3. 2017 Toyota Tundra Limited Crew Cab Pickup 78.7 in. bed
  4. 2017 Toyota Tundra SR5 Crew Cab Pickup 78.7 in. bed
  5. 2017 Toyota Tundra SR Standard Cab Pickup 97.6 in. bed
  6. 2017 Toyota Tundra SR Crew Cab Pickup 97.6 in. bed
  7. 2017 Toyota Tundra SR Crew Cab Pickup 78.7 in. bed
  8. 2017 Toyota Tundra SR5 Crew Cab Pickup 97.6 in. bed
  9. 2017 Toyota Tundra SR5 Extended Crew Cab Pickup 66.7 in. bed
  10. 2017 Toyota Tundra Limited Extended Crew Cab Pickup 66.7 in. bed
  11. 2017 Toyota Tundra 1794 Edition Extended Crew Cab Pickup 66.7 in. bed
  12. 2017 Toyota Tundra Platinum Extended Crew Cab Pickup 66.7 in. bed
  13. 2016 Toyota Tundra SR5 Crew Cab Pickup 78.7 in. bed
  14. 2016 Toyota Tundra SR Crew Cab Pickup 78.7 in. bed
  15. 2016 Toyota Tundra Limited Crew Cab Pickup 78.7 in. bed
  16. 2015 Toyota Tundra SR5 Extended Crew Cab Pickup 66.7 in. bed
  17. 2015 Toyota Tundra Platinum Extended Crew Cab Pickup 66.7 in. bed
  18. 2015 Toyota Tundra Limited Extended Crew Cab Pickup 66.7 in. bed
  19. 2015 Toyota Tundra 1794 Edition Extended Crew Cab Pickup 66.7 in. bed
  20. 2014 Toyota Tundra SR 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  21. 2014 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  22. 2014 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  23. 2014 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  24. 2014 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  25. 2014 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
  26. 2014 Toyota Tundra SR 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
  27. 2014 Toyota Tundra SR 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  28. 2014 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  29. 2014 Toyota Tundra SR 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
  30. 2014 Toyota Tundra SR 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  31. 2014 Toyota Tundra SR 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  32. 2014 Toyota Tundra Platinum 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  33. 2014 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  34. 2014 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  35. 2014 Toyota Tundra 1794 Edition 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  36. 2013 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  37. 2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 97.6 in. bed
  38. 2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  39. 2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
  40. 2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  41. 2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  42. 2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  43. 2013 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 97.6 in. bed
  44. 2013 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  45. 2013 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
  46. 2013 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  47. 2013 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
  48. 2013 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  49. 2013 Toyota Tundra Platinum 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  50. 2013 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  51. 2013 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  52. 2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
  53. 2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  54. 2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 78.7 in. bed
  55. 2013 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
  56. 2013 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  57. 2013 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
  58. 2013 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 78.7 in. bed
  59. 2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
  60. 2013 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
  61. 2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  62. 2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  63. 2012 Toyota Tundra 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  64. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
  65. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
  66. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  67. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  68. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  69. 2012 Toyota Tundra 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
  70. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 78.7 in. bed
  71. 2012 Toyota Tundra 4.6L V8 cc:4608 Standard Cab Pickup 78.7 in. bed
  72. 2012 Toyota Tundra 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
  73. 2012 Toyota Tundra 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  74. 2012 Toyota Tundra 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
  75. 2012 Toyota Tundra 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  76. 2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  77. 2011 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  78. 2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  79. 2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  80. 2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  81. 2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  82. 2011 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 97.6 in. bed
  83. 2011 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  84. 2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  85. 2011 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
  86. 2011 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  87. 2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
  88. 2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  89. 2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 97.6 in. bed
  90. 2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  91. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
  92. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
  93. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 78.7 in. bed
  94. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
  95. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
  96. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
  97. 2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  98. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
  99. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
  100. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 78.7 in. bed
  101. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
  102. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  103. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
  104. 2011 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  105. 2010 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  106. 2010 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  107. 2010 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  108. 2010 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  109. 2010 Toyota Tundra Platinum 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  110. 2010 Toyota Tundra Platinum 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  111. 2010 Toyota Tundra Platinum 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  112. 2010 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  113. 2010 Toyota Tundra Limited 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
  114. 2010 Toyota Tundra Limited 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  115. 2010 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
  116. 2010 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
  117. show all...
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About this product

Part #: 817664

Flowmaster's American Thunder cat-back exhaust system for the 2009-2018 Toyota Tundra pickup trucks with the 5.7L or 4.6L V8 engines is perfect for the person looking for an aggressive sound level with all of the performance benefits that you would expect from Flowmaster. This DOR/DOS (Dual Out Rear, Dual Out Side) bolt on 409S stainless steel system features dual 2.50 in. tailpipes and 3.50 in. polished stainless steel tips. This system is designed to fit regular cab/long bed, double cab/short bed and CrewMax models. 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 Diameter2.500 in.
Inlet Inside Diameter2.500 in.
MaterialStainless Steel
Muffler Part NumberKit Only
Muffler Series40 Series Big Block
Outlet Diameter2.500 in.
Outlet Outside Diameter3.500 in.
Single or DualDual
Sound LevelAggressive
System TypeCat Back
Tail Pipe Diameter2.500 in.
Tip Diameter3.500 in.
Tip Length13.000 in.
Tip Quantity2
TitleFlowmaster 817664 Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Aggressive Sound
Tubing Diameter2.500 in.
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

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  • California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

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    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.

    Benefits of adding this mod

    An upgraded exhaust system is one of the easiest modifications that offers an immediate, noticeable performance improvement. Whether you’re cruising an M3 or modding a diesel truck, an upgraded exhaust will open up the restrictive factory system, allowing your engine to breathe better and deliver peak power! From lighter weight exhaust headers to improved cat-back systems, to better sounding mufflers, modifying your exhaust setup is a great place to express the character of your ride in a unique and cost effective way. Whatever you’re looking for in a modified exhaust system, we can provide the absolute best systems to make your vision a reality.

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    Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

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    Matt Farah

    Smoking Tire / The Drive

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    Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

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