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Flowmaster 817423 Flowmaster American Thunder Cat-back Exhaust System

Free shipping on orders over $29.99

$804.95

$ 99 .00 $99.00

In Stock

1.Style:Base Product


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Dyno Tuned for Maximum Performance
  • 3.00-inch Polished Stainless Steel Tips
  • Super 50 Series Performance Muffler


Flow master 817423 Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Moderate Sound


Charles in Richmond
Reviewed in the United States on May 17, 2015
Ordered this system and installed it on my son's 2006 Dodge Ram 5.7, do yourself a favor and get a muffler shop to heat up the muffler clamp and remove the old muffler and tailpipe assembly if the system is older or rusted. Once the factory muffler and tailpipe was removed the installation of the Flowmaster Cat Back system went on with no issues. The fit and finish is good quality and if you follow the instructions while hanging the system and do not tighten any of the clamps before all the the system is hung and as always a little adjusting here and there to get everything even and balanced, then torque every thing down after it is hanging evenly. It looks awesome, we exited the tips angled out the sides behind the rear wheels. Noise level was much quieter than what i hoped for but i believe that to be partly due to a restrictive factory cat and the MDS system that shuts off 4 cylinders on all newer 5.7 Hemi's when not under load. I like it, and would purchase it again.
Brewtown
Reviewed in the United States on April 18, 2013
Great price. Easy install. Make sure you leave room on the intake to muffler, you can always trim. It's loud enough for me, quiet enough for my family and just enough for the car next to me to admire the deep purr my hemi rains out. Couldn't have asked for anything better.
Tampa
Reviewed in the United States on November 26, 2011
I have a 08 Dodge Ram 5.7 Hemi with MDS. MDS can ruin the whole sound of your exhaust when it kicks in. I drove around in tow/haul mode for awhile to keep MDS off till I got tired of driving in 4th gear all the time. I ended up buying a Diablo Preditor programmer (
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