cat-back

Flowmaster 817664 - American Thunder Cat Back Exhaust System

Name: Flowmaster 817664 - American Thunder Cat Back Exhaust System (817664)
Brand: Flowmaster
SKU: 5b00028b259b31d67f8879ae
Price: 839.95 USD
Availability: InStock

$839.95

$933.95

You save: $94.00 (10%) off MSRP

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2018 Toyota Tundra 5.7L V8 cid:345 cc:5663 66.7 in. bed
2018 Toyota Tundra 5.7L V8 cid:345 cc:5663 78.7 in. bed
2017 Toyota Tundra SR5 Crew Cab Pickup 78.7 in. bed
2017 Toyota Tundra SR Standard Cab Pickup 97.6 in. bed
2017 Toyota Tundra SR5 Extended Crew Cab Pickup 66.7 in. bed
2017 Toyota Tundra Platinum Extended Crew Cab Pickup 66.7 in. bed
2017 Toyota Tundra SR Crew Cab Pickup 78.7 in. bed
2017 Toyota Tundra SR5 Crew Cab Pickup 97.6 in. bed
2017 Toyota Tundra Limited Crew Cab Pickup 78.7 in. bed
2017 Toyota Tundra SR Crew Cab Pickup 97.6 in. bed
2017 Toyota Tundra 1794 Edition Extended Crew Cab Pickup 66.7 in. bed
2017 Toyota Tundra Limited Extended Crew Cab Pickup 66.7 in. bed
2016 Toyota Tundra SR Crew Cab Pickup 78.7 in. bed
2016 Toyota Tundra SR5 Crew Cab Pickup 78.7 in. bed
2016 Toyota Tundra Limited Crew Cab Pickup 78.7 in. bed
2015 Toyota Tundra Limited Extended Crew Cab Pickup 66.7 in. bed
2015 Toyota Tundra 1794 Edition Extended Crew Cab Pickup 66.7 in. bed
2015 Toyota Tundra SR5 Extended Crew Cab Pickup 66.7 in. bed
2015 Toyota Tundra Platinum Extended Crew Cab Pickup 66.7 in. bed
2014 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2014 Toyota Tundra 1794 Edition 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2014 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2014 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2014 Toyota Tundra SR 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
2014 Toyota Tundra SR 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
2014 Toyota Tundra SR 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2014 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2014 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2014 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
2014 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2014 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2014 Toyota Tundra SR 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2014 Toyota Tundra SR 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2014 Toyota Tundra Platinum 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2014 Toyota Tundra SR 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
2013 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 78.7 in. bed
2013 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 78.7 in. bed
2013 Toyota Tundra Platinum 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2013 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2013 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
2013 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 78.7 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Standard Cab Pickup 78.7 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
2012 Toyota Tundra 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
2012 Toyota Tundra 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 97.6 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 97.6 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 97.6 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 97.6 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 97.6 in. bed
2011 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 97.6 in. bed
2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Extended Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Standard Cab Pickup 78.7 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Standard Cab Pickup 78.7 in. bed
2011 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2011 Toyota Tundra SR5 4.6L V8 cc:4608 Extended Crew Cab Pickup 66.7 in. bed
2011 Toyota Tundra Base 4.6L V8 cc:4608 Extended Crew Cab Pickup 78.7 in. bed
2010 Toyota Tundra Limited 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2010 Toyota Tundra Base 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra Platinum 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra Platinum 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2010 Toyota Tundra Platinum 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra Limited 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra SR5 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2010 Toyota Tundra SR5 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 78.7 in. bed
2010 Toyota Tundra Base 4.6L V8 cc:4608 Crew Cab Pickup 66.7 in. bed
2010 Toyota Tundra Limited 5.7L V8 cid:345 cc:5663 Crew Cab Pickup 66.7 in. bed

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Authorized Dealer

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 Series	American Thunder
Exhaust Type	Dual
Exit Position	Dual Out Rear
Exit Position	Dual Out Side
Exit Style	Straight
Heat Shield Attached	No
Inlet Diameter	2.500 in.
Inlet Inside Diameter	2.500 in.
Material	Stainless Steel
Muffler Part Number	Kit Only
Muffler Series	40 Series Big Block
Outlet Diameter	2.500 in.
Outlet Outside Diameter	3.500 in.
Single or Dual	Dual
Sound Level	Aggressive
System Type	Cat Back
Tail Pipe Diameter	2.500 in.
Tip Diameter	3.500 in.
Tip Length	13.000 in.
Tip Quantity	2
Title	Flowmaster 817664 Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Aggressive Sound
Tubing Diameter	2.500 in.

Additional Documents

See what our community says about flowmaster products

138

Jeffrey Guay

2014 Chevrolet Camaro

What made you choose this particular product?

Sounded the best in my opinion. Very nice burble with stock exhaust manifolds and reasonable volume when you wind out the car. Just had a great muscle car sound in my opinion.

View on Jeffrey's build

132

Tyler Allen

2001 Ford Mustang

What made you choose this particular product?

Classic Flowmaster sound.

Is this your first time buying from this brand? Did you consider other brands?

No, installed on other cars as well

Once you've had a chance to use the product, did it meet your expectations?

Nice sound and not too heavy on the wallet.

View on Tyler's build

Kevin Westhoff

2003 Ford F-150

What made you choose this particular product?

my family has bought from flow master before, and the cost was low, and the note it makes at idle is amazing but not too loud

Is this your first time buying from this brand? Did you consider other brands?

i considered several others but flow master took my heart with the signature truck note

Was it easy to install? Any installation tips that will help others?

i installed it myself i welded it in

View on Kevin's build

Tommy Campbell

1996 Volkswagen Jetta

What made you choose this particular product?

It was on the car when I got it.

Was it easy to install? Any installation tips that will help others?

Yep cuz someone else did it!

Once you've had a chance to use the product, did it meet your expectations?

Sounds good, tempted to a muffler delete because it needs more loud.

View on Tommy's build

653

Michael Stone

2000 Jeep Grand Cherokee

What made you choose this particular product?

The sound output. Just right

Is this your first time buying from this brand? Did you consider other brands?

Yes, No.

Was it easy to install? Any installation tips that will help others?

Vary easy and light weight. Be sure to install in in the right orientation or you will need to take it off and redo it. (dont ask)

Once you've had a chance to use the product, did it meet your expectations?

Exceeded them!

View on Michael's build

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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.

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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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