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: 882.95 USD
Availability: InStock

$882.95

$982.00

You save: $99.05 (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

Jeremy Henson

2019 Ram 1500

What made you choose this particular product?

sound,performance

What were you trying to accomplish by adding this product?

aggressive sound

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

very easy.

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

yes

View on Jeremy's build

102

Julio Morales

1966 Chevrolet C10 Pickup

What made you choose this particular product?

Sound

What were you trying to accomplish by adding this product?

Muscle sound

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

Yes

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

I think three inch would have a better sound.

View on Julio's build

1.0k

Mason W

2000 Toyota 4Runner

What made you choose this particular product?

Cheap and effecfive. Won’t wear out.

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

No.

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

Cut out the old, clamped in the new.

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

Works fine. Sounds decent.

View on Mason's build

294

Karl Palmer

2000 Ford F-150

What made you choose this particular product?

Price

What were you trying to accomplish by adding this product?

Lil more growl

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

Professional

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

Yes great healthy sound

View on Karl's build

550

Sam Jacobson

2013 Dodge Dart

What made you choose this particular product?

I wanted a little more rumble from the car at idle.

What were you trying to accomplish by adding this product?

Have more idle, replaced the Flowmaster dBX muffler for the HP-2 Shorty.

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

With resonated tips added at the same time, I have enjoyed the sound of my exhaust more than I ever have! When the car is cold my car's exhaust pops louder than ever and I love it! It is a muffler rated way higher on the Flowmaster exhaust chart!

View on Sam's build

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WARNING: 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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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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