2009-2014 Ford F150 V8 Flowmaster American Thunder Cat-Back (Stainless) | Part# 817522

2009-2014 F150 Flowmaster American Thunder Dual Exit Cat-Back

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Part#:

817522

4 Review(s) Write a Review

8 Customer Q&A(s)

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Retail Price:$920.95

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Product Features
4 Customer Review(s)
8 Q&A(s)

Awesome Sound and Deep, Throaty Rumble

If you're looking for one of the most aggressive and powerful exhaust notes on the road along with some extra performance, then the Flowmaster American Thunder Cat-Back kit should be your first stop. This powerful exhaust system produces a massive roar for 2009 to 2014 F150s with 4.6L, 5.4L, and 5.0L V8 engines and features a dual exit tailpipe design to give your impressive F150 an even more unique and aggressive look. Each kit comes complete with new mufflers, tailpipes, and exhaust tips that are designed to bolt right up to your truck's factory mid-pipe.

Features Dual Exit Tailpipes

The kit's main ingredient is its unique muffler that's part of Flowmaster's Super 40 Series and has a chambered design with Flowmaster's Delta Flow system which provides a deep, throaty sound for your truck's engine and really cranks up the volume over the restrictive factory muffler. The dual tailpipes are made up of 16-gauge, 2.5" diameter tubing that's all mandrel-bent to provide a smooth exhaust exit for great performance gains. Flowmaster includes a pair of 3" polished tips embossed with their logo. The system is made out of 409S stainless steel right here in the USA and comes backed by Limited Lifetime Warranty.

This cat-back exhaust kit deletes your factory resonator for a more aggressive tone.

Check out our install guide of this cat-back kit on our 2012 F150 5.0L FX4 Project Truck!

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2014 Ford F150 STX 5.0L SuperCrew

Super dope!! It gets really mean around 2.5k when accelerating and only gets better. The exhaust note is, as the item is titled, thunderous. If you're looking to be the definition of an American then this is the exhaust for you. I heard this system was made purely by American Bald Eagles. When you step on the gas, you're truly liberating your ears and allowing them the hear what absolute freedom sounds like. Long story short, you'll scare that Pruis that's next to you at a red light when you smash the gas. Be free my brothers, American Thunder is here for your American needs. *Bald Eagles screeching*

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Reviewed by: (Verified Buyer) Kevin Colvin from California on 4/21/2016

2010, Ford, F150

When I first got the exhaust I was super excited because, before I bought the truck I have now, I had a 99 f150 5.4 and it had a flowmaster on it and it sounded super cool, but it was on the quite side. The install of the new exhaust was very clean and simple to install with a 200 ft pound impact and some ratchets and the tips look very nice. When I first started driving the truck I felt a sense of empowerment when I was driving with that deep aggressive rumble behind me. Around 2000 RPMs the truck is really clean but really deep and also when you are getting on the highway the truck wakes the dead. There is some drone but it sounds good and doesn't hurt your head after long periods of time. In all the exhaust sounds amazing and also makes every body look at you.

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Reviewed by: John from San Marcos on 7/18/2016

2013 F150 Ford

Exceeded my expectations. This exhaust sounds great and really makes the 5.0 sounds throaty and deep without being too loud. There is drone will driving down the road but it sounds good and really makes the truck sounds aggressive. I'd definitely recommended it. Install is pretty easy. I dot it myself in about 3 hours

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Reviewed by: (Verified Buyer) Kyle Bradley from La plata Maryland on 2/15/2015

2014 F150 FX4 Supercrew

Easy to install and sounds great. Wasn’t too thrilled when both of the bolts on the tips rung off before the tips were even close to tight.

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Reviewed by: Shaun from Virginia on 9/5/2021

Don't have to have headers with this kit do u??? I know it would make it sound even better but trying to save a lil money hah

Asked by: Chief 42 - 4/8/2020

This kit does not need long tubes. It's designed to bolt to the stock Y-pipe, though it will also fit stock-replacement Y-pipes.

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Answer provided by: Jason@Stage3 (4/9/2020)

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Cani purchase this exhaust with black tips? If so,is there an extra cost?

Asked by: Joe - 6/6/2016

Black tips are not available with this kit as a standard item. Tips can be purchased separately over in our exhaust tips section, or you can call us directly at 1-877-578-2433 so we can possibly put a package together.

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Answer provided by: Jason@Stage3 (6/7/2016)

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In one question that was asked about this exhaust you stated it should not be paired with a cold air intake, the original question was does the vehicle need to be tuned when using this exhaust. Can you explain why you shouldn't use a cold air intake?

Asked by: Kevin Darga - 4/21/2016

This kit will work fine with just about any cold air intake system, and as long as the intake in question doesn't require a tune, then you won't need a tune with this cat-back kit.

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Answer provided by: Jason@Stage3 (4/21/2016)

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Well th le American thunder cat back system work with a long tube mid length kit that has 3" tubing?

Asked by: Keith - 3/23/2016

That's going to depend on the set of long tube headers that you have in mind. Some aftermarket header systems can only be used with certain styles of cat-back systems (namely Stainless Works' header kits). However, most others can be used with any stock-replacement cat-back system designed for the factory mid-pipes.

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Answer provided by: Jason@Stage3 (3/23/2016)

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Will this fit the 2013 supercab with 8ft bed (163.7" wheelbase_250.4") with or without modification? If with, what?

Asked by: Tim - 9/16/2015

The kit fit will F150s with 163" wheelbases and comes with the necessary extension tubing in the box, requiring no custom modifications or trimming.

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Answer provided by: Jason@Stage3 (9/17/2015)

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Do you need a custom tune for this exhaust system, or can you simply install and go? Example check engine light

Asked by: Adam Stoner - 9/7/2014

Tuning is not required and you should not throw a CEL with this or any other cat-back exhaust system.

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Answer provided by: Jason@Stage3 (9/8/2014)

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this exhaust systems work with my 2012 ford f150 5.0 crew cab? and how its the drone in cab sound?

Asked by: cristian ford f150 5.0 crew cab - 3/17/2014

This exhaust system will fit any F150 wheelbase and cab/bed configuration. If you have a SuperCrew with a 5.5ft bed, you'll use the kit's standard inlet pipe and won't need to do any cutting. If you have a SuperCrew with a 6.5ft bed, you'll need to use and included extension pipe and trim 6" off of it, according to Flowmaster's instructions. As far as drone, there's very little at cruising and none at idle. When we drove around with it, you could definitely tell there was an aftermarket exhaust kit on the truck, but it wasn't loud enough to force us to talk louder or turn up the stereo. It's a very good, decently aggressive exhaust system that just sounds good.

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Answer provided by: Jason@Stage3 (3/18/2014)

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With this kit do you have to remove your underneath spare tire if you use the rear exit pipes, and will you have to use different clamps, I hear the ones that come with it are not to hot,? thanks'

Asked by: Lynn Yount 2014 F-150 5.0 - 12/15/2013

The OEM spare tire can stay with this kit. A lot of customers install a band clamp style exhaust clamp on these kit.

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Answer provided by: Administrator (12/23/2013)

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2009-2014 Ford F150 V8 Flowmaster American Thunder Cat-Back (Stainless) | Part# 817522

817522

Awesome Sound and Deep, Throaty Rumble

Features Dual Exit Tailpipes

Don't have to have headers with this kit do u??? I know it would make it sound even better but trying to save a lil money hah

Cani purchase this exhaust with black tips? If so,is there an extra cost?

In one question that was asked about this exhaust you stated it should not be paired with a cold air intake, the original question was does the vehicle need to be tuned when using this exhaust. Can you explain why you shouldn't use a cold air intake?

Well th le American thunder cat back system work with a long tube mid length kit that has 3" tubing?

Will this fit the 2013 supercab with 8ft bed (163.7" wheelbase_250.4") with or without modification? If with, what?

Do you need a custom tune for this exhaust system, or can you simply install and go? Example check engine light

this exhaust systems work with my 2012 ford f150 5.0 crew cab? and how its the drone in cab sound?

With this kit do you have to remove your underneath spare tire if you use the rear exit pipes, and will you have to use different clamps, I hear the ones that come with it are not to hot,? thanks'

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