Flowmaster American Thunder Dual Exhaust System; Side/Rear Exit (04-08 5.4L F-150)

10 customer reviews
SKU: 18B981E3
In Stock

$875.95

In Stock
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Description

Demand Respect. There’s nothing like the rumbling powerful sound of an aftermarket exhaust system like this one from flowmaster. It transforms a tame F-150 truck into a powerful beast that demands respect. Everywhere you drive you’ll get looks of admiration for the tough sound your truck has, and it’s due to this kit. The kit is designed with wide pipes and a special muffler for a controlled rumble that you can be happy with.Go Faster. Stop driving with the same level of power that you’ve…

10 reviews for Flowmaster American Thunder Dual Exhaust System; Side/Rear Exit (04-08 5.4L F-150)

  1. Garsone –

    Love the sound of the Flowmaster exhaust. Perfect fit. Easy to install. Has that awesome deep throaty sound.

  2. LocalGuy –

    Got this and paid to get it installed. Definitely worth the buy as you get a nice sound that isn’t overpowered. Worth the purchase

  3. Ron –

    This kit was pretty easy to install. The hardest part was getting the chrome tips aligned to my satisfaction. Only other issue is that this system is louder than I would like. The tone is fine but around 60 mph. It has a dull roar that makes me want to go faster or slower to stop this soundtrack.

  4. Chefs_f150 –

    Let me star with just saying “mhmm that works”. Installed this system by myself in less than 4 hrs. As long as you follow the directions “exactly” it’s quite easy. On another note though, the image is not exactly what you get. This system is indeed full stainless but it’s unpolished, and the muffler is painted black not polished like picture shows. But don’t let that detour you. It’s still worth the money. A bit of buffing will make it shine just like the tips that come with it. Just wish they were the 3 inch tips and not 2.

  5. JamesJ –

    Easy install… Louder than expected and took a bit to adjust. Easier with 2 people but can be done by yourself, just takes more time to adjust

  6. DaleM –

    The hardest part was to take off the factory system. The exhaust fit well with the exception of the inlet hanger. It would not mount into the factory mount. Overall I am very pleased with the change. Not as loud as I expected, but I am happy with it. Definite difference in my engine performance.

  7. MichaelS –

    Everything fit just as advertised no problem installing hardest part was removing the original factory system

  8. Jay –

    Looks and sounds great easy install for diy fits great

  9. CaptainsReview –

    I ordered the Flowmaster American Thunder dual Exhaust system and had it professionally installed straight out the back. It is Awesome! I Love the sound and it increased my horsepower slightly as well. I recommend this to anyone looking for an affordable upgrade for their exhaust system. The exhaust looks Great as well with those Flowmaster tips!

  10. ToddReed –

    Sounds great. Gives my truck a nice , low, throaty rumble. This kit, with the addition of a Roush cold air intake really opened things up. The install shop said that the fitment had to be adjusted a good bit though.

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