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Flowmaster Exhaust Systems Part #817312 Customer Reviews

Average Rating

5 Customer Reviews

Flowmaster Amercan Thunder

Reviewed by Ed K (Round Lake, IL) Reviewed for a 2004 Ford Mustang — Feb 09, 2016 7:20 AM

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I purchased the Flowmaster American Thunder exhaust from Auto Anything with a 20% discount and rebate. I also purchased the BBK o/r x pipe. Had it installed in couple of hours and sounds great. Now my 04 Mustang GT sounds like it should.

Hot Ride!

Reviewed by Ronald O (Lake Geneva, WI) Reviewed for a 2002 Ford Mustang — Jun 06, 2015 3:24 AM

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Buy these pipes, you won't be disappointed. I feel bad I had Superman put in new speakers because I like listening to the pipes more that I do the stereo! These put out a nice deep rumble, especially driving at 2000rpm. With or without the top down I can hear them and it's a perfect sound. Not crazy loud just deep and tough.

Love it

Reviewed by Doug B (Wilkes Barre, PA) Reviewed for a 2004 Ford Mustang — Mar 14, 2014 5:21 PM

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2 of 2 people found the following review helpful.

Love the sound of my flowmaster and I can def. tell there is more pick up n go with my 04 Mustang. I'd recommend this to anyone!

Need a lift

Reviewed by jason o (Chapel Hill, NC) Reviewed for a 1999 Ford Mustang — Dec 14, 2011 8:29 PM

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Taking off the old exhaust and installing the mufflers was a breeze. Not so easy with the tail pipes though. Had the jacks on 2 blocks of wood and still couldn't get the right angle to install them. My mechanic did it real quick once it was on a lift. Sounds awesome, but has some drone.

2004 Mach 1

Reviewed by GEORGE A (Boardman, OH) Reviewed for a 2005 Dodge Durango — Aug 24, 2011 8:34 AM

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4 of 4 people found the following review helpful.

This exhaust system is great looks good and sounds good. I can definately feel the Hp boost. I would suggest taking your ride to a muffler shop. Took them about thirty minutes to take off the old ands install the new.

Flowmaster Exhaust Systems - 817312

Cat Back Exhaust - American Thunder Series
  • $601.38
  • Free Shipping
  • Ships Between 8/20 - 8/22
  • What Do You Drive?


  • Style:
    Dual Rear Exit (409 Stainless)
  • Material:
    With Dual Exhaust Tips
  • Part #:

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