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Your cart is empty.Your 2005-2010 GT or 2007-2010 GT500 packs a thoroughbred of an engine. There is no need to bottle it up with restrictive, wimpy-sounding stock mufflers. Unleash the stallion within, with a Loud Mouth Rear-Section Exhaust System from SLP Performance Parts. This affordable, easy-to-install kit eliminates the factory mufflers entirely, drastically reducing back-pressure for enhanced power and a mind-blowing performance sound. Nothing else even comes close.
JM
Reviewed in the United States on February 25, 2020
I wanted my 2005 4.6 liter mustang to be loud, and now it's loud. I've had it on the car for a few years now and I'm pleased with the results. There is less drone cruising at interstate speeds with the Loudmouth, which actually makes it quieter for long road trips. It is only loud when you first start it and when you stand on the gas. These results are with factory manifolds and catalytic converters, it would probably be rowdy with a cat delete and x pipe.
Quinn L.
Reviewed in the United States on July 9, 2019
Fantastic finish, sounds great outside the car. A little quiet in the interior than I like, but that’s not a bad thing.
Joe Spaid
Reviewed in the United States on August 30, 2016
Sounds good. Very lightweight & easy install. Not too loud either
michael ryan kent
Reviewed in the United States on December 4, 2016
On a gt500 still quiet. Also hangers were not in ideal spot to increase or decrease the amout of pipe exposed in the rear. I was able to get them even but they stuck out further than i liked without bending the hangers.
Porter
Reviewed in the United States on May 29, 2013
Taking my time and using just a jack/jackstands I did the replacement of the stock axle backs in 90 mins. They fit really good and it was easy to adjust the tips so they were even. Install was a snap, with removal of the corroded stock exhaust taking as much time as installing and lining up the new ones. They are deeper sounding, throatier, and louder than stock but definitely not as loud as I was hoping. I've heard if you do headers and remove the cats it will become "too loud". I'm just going to leave it as is. It's nice being able to pull out of my garage late at night without waking the neighbors up or getting pulled over all the time. It would be very easy to swap back to stock exhaust if I ever wanted to since nothing was cut or damaged during the removal.
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