12GT500 Posted December 29, 2011 Report Share Posted December 29, 2011 Had a Roush Axle Back exhaust installed at the dealer on my 2012 GT500 in June 2011 and I love the sound- However - was under the car this past weekend and the exhaust has a 8 inch crack right along one of the welds on the driver side muffler - definitely disappointing quality for an exhaust with 2000 miles on it. I will update as the warranty process is explored. Link to comment Share on other sites More sharing options...
12GT500 Posted December 29, 2011 Author Report Share Posted December 29, 2011 so far i am unable to attach pics - i will keep trying - if anyone wants the pics u can email me at ttamking@gmail.com Link to comment Share on other sites More sharing options...
twobjshelbys Posted December 29, 2011 Report Share Posted December 29, 2011 Um, Roush exhaust in a Shelby forum? Just sayin. It was dealer installed, but how long ago? It could be a manufacturing defect or an installation induced problem. Sounds like a trip to the dealer/installer is in order. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted December 29, 2011 Report Share Posted December 29, 2011 Had a Roush Axle Back exhaust installed at the dealer on my 2012 GT500 in June 2011 and I love the sound- However - was under the car this past weekend and the exhaust has a 8 inch crack right along one of the welds on the driver side muffler - What Roush system do you have on your GT500 that includes mufflers??? I have the Roush Extreme on my 2010 and it deletes the mufflers. Did they start making a system with mufflers on it? Phill Link to comment Share on other sites More sharing options...
12GT500 Posted December 29, 2011 Author Report Share Posted December 29, 2011 I have this system - Part #421127 http://www.roushperformance.com/parts/Mustang-Exhaust-with-Round-Tips-2011-2012.html It was dealer installed 6 months ago - I have emailed my sales guy pics and am awaiting word on the next step. Just disappointed in the quality. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted December 29, 2011 Report Share Posted December 29, 2011 I have this system - Part #421127 http://www.roushperf...-2011-2012.html It was dealer installed 6 months ago - I have emailed my sales guy pics and am awaiting word on the next step. Just disappointed in the quality. Huh. I've heard those on a 5-0 but didn't know they'd work on a GT500. They sound TUFF on a 5-0! One of the better sounding mufflers I've heard. Roush is pretty good about standing behind his stuff. You might want to call them and by-pass your dealer...or not. Phill Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted December 29, 2011 Report Share Posted December 29, 2011 Um, Roush exhaust in a Shelby forum? Just sayin. Well *SHELBY* don't make a damn exhaust! So regardless of brand (Roush or any other brand) it won't be Shelby in a Shelby forum! Phill Link to comment Share on other sites More sharing options...
12GT500 Posted December 29, 2011 Author Report Share Posted December 29, 2011 Yeah - it bolts right on the GT500's. And it is seriously loud - really increased the volume. I will see how the dealer progresses and go from there - just wanted to share my experience so far with this Roush system - still trying to figure out how to add the pics Link to comment Share on other sites More sharing options...
Freak Posted December 31, 2011 Report Share Posted December 31, 2011 Huh. I've heard those on a 5-0 but didn't know they'd work on a GT500. They sound TUFF on a 5-0! One of the better sounding mufflers I've heard. Phill I'm pretty sure that the 11-12 axlebacks are interchangable between the 5.0 and Shelby, I've seen GT guys bolt on Shelby mufflers, without mentioning that thwy had to modify them. Yours being a 2010 has different size pipe, and the 4.6 exhaust might have been different as well. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted January 1, 2012 Report Share Posted January 1, 2012 Yours being a 2010 has different size pipe, and the 4.6 exhaust might have been different as well. Yeah, the 2010 has a smaller OD exh. pipe than the '11 and '12 but if I recall, it's the same part number for a 4.6L or a 5.4L. Someone (here) that installed one on his '10 is who told me they'd work. I'll double check Roush's site but I'm pretty sure they're the same item (on 2010 GT500 w/5.4L and Roushcharged 427R's w/4.6L engines). I heard a Roush Stage II 5.0 with the "in the trunk" exhaust cans installed and it sounded MEAN. It's not a good sign that the OP has a set that cracked though but Roush is REAL GOOD about standing behind their product. Phill Link to comment Share on other sites More sharing options...
12GT500 Posted January 19, 2012 Author Report Share Posted January 19, 2012 This is my cracked muffler - my Roush axle back - that is 7 months old. Quite a disappointment in quality Link to comment Share on other sites More sharing options...
IA Shelby Posted January 23, 2012 Report Share Posted January 23, 2012 Mine have not cracked but have rusted some after 2500 miles while never being driven in the rain. I am switching out come spring. Link to comment Share on other sites More sharing options...
dbrisson Posted January 27, 2012 Report Share Posted January 27, 2012 I was looking at the same exhaust for my 12. I am trying to find something close to the 2010 KR exchaust, had the flowmaster hushpower and they were a little soft, changed to the flowmaster outlaw and they are very loud so looking for something in between. These looked good but may have to reconsider. Link to comment Share on other sites More sharing options...
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