Flowmaster 817737 - American Thunder Cat Back Exhaust System

About this product

Flowmaster's American Thunder Cat-back exhaust system for the 2015 - 2019 Dodge Challenger SXT is perfect for the person looking for a moderate exterior sound level while maintaining a mild interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system for the 3.6L V6 engine features 2.50" mandrel bent tubing for maximum performance and includes a Scavenger X-pipe and dual Super 44 mufflers. The system is finished off with tuned resonators and stainless steel tips that exit within the rear bumper valence. 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.

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293

Travis Pessina

2006 Dodge Charger

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

51

Wadie Elam

2003 Ford F-150

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

2.4k

Timothy Moore

2001 Volvo S60

What made you choose this particular product?

After doing a good deal of research on different mufflers, and running into Summit Racing Equipment's video on Flowmaster exhaust series comparison video, I decided on this Super HushPower 2 muffler, which ended up being the right choice!

What were you trying to accomplish by adding this product?

My old exhaust system was rusting out (but not severely), so I thought it would be a nice project to get rid of it in favor of a lighter, better-sounding custom setup. I wanted something very sporty, but not aggressive, or too loud.

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

Mostly yes because this part of the exhaust project was easier to put up with than the glasspack--both before and after making changes. This one was a bolt-on both times. It is secured with v-bands in case I want to swap it out, or remove it easier when I want to do something in the rear, such as dropping the rear subframe, for example.

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

At first, my expectations were rather mixed. It was a bit louder than I expected before installing the glasspack, and the raspiness was more of a thing before I rearranged the exhaust to have the muffler closer to the rear. Moving it to the rear gave it the more preferred low-tone, "burbling" exhaust note I was looking for, but either way, it always sounded good--especially with a glasspack. I was even told by a few people that it sounded like a V10, noticing how similar 5-cylinder and V10 engines sound!

Any additional comments?

Definitely a nice, lightweight, and not-too-loud option for custom exhausts! It is on the quieter-end of the Flowmaster exhaust aggressiveness spectrum after all.

View on Timothy's build

66

Connor Martin

2015 Ford Mustang

What made you choose this particular product?

It sounded really good on the car

What were you trying to accomplish by adding this product?

Make the car more vocal but not obnoxious

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

I paid someone to install it

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

Yes it was worth every penny

Any additional comments?

Very deep sounding exhaust. 10/10 product

View on Connor's build

157

Gianfranco Estremadoyro

2009 Ford Mustang

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

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