Bill Haleck Posted April 10, 2009 Report Share Posted April 10, 2009 Hi Guys, Can you all please provide some insight as to the KR Mufflers Ford part # M-5230 that are on the Shelby GT500KR. Are they worth installing on a regular GT-500. Does it do anything to increase performance. I cannot afford a KR so I am doing my best to duplicate the KR performance with the added 40HP with the calibration tool from Ford, the 3.73 gears, the mufflers, Ford Open Air Filter, Ford Short Shifter Kit with that white ball as it reminds me of the 60's cars etc. on my 2008 GT500. If I were to purchase these mufflers, where can I purchase them for a good price plus shipping. All of your inputs of course is greatly appreciated. I had listen to the sound difference between a stock GT500 and with the GT500KR in comparison and by far the KR mufflers sounded more aggressive and a little louder. Any drone noise from these mufflers as I like the sound but do not want that much of an intrusion on the top end especially on long freeway driving. Aloha - Bill Link to comment Share on other sites More sharing options...
Paulie Posted April 10, 2009 Report Share Posted April 10, 2009 I have some comming this next week, but just was on ebay and saw some for $525, I dont know if this is the best price around, but thought I would mention it. Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 Mine just came yesterday. I got them from Black Vert Mafia Performance for $539 shipped. :happy feet: I see BOI has them for $539 shipped too: http://www.blueovalindustries.com/products.php?pid=99013360 Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 When yours come, you need to clean the rusty looking welding residue off the flat areas. Use some windex, then some metal polish. Here's mine after I cleaned them up. I will be putting them on tomorrow and doing a install thread / sound clip. Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 Then to make it sound like a true KR, I will be cutting out the X pipe .....and installing the H-pipe next week when it arrives The H-pipe wakes up the KR mufflers and gives it the unique sound just like the KR. Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 ...another pic of the H-pipe Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 The sound: Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 I have some comming this next week, but just was on ebay and saw some for $525, I dont know if this is the best price around, but thought I would mention it. I saw that add. It does not include shipping. They want another $47 bucks to ship them. Link to comment Share on other sites More sharing options...
Paulie Posted April 10, 2009 Report Share Posted April 10, 2009 I saw that add. It does not include shipping. They want another $47 bucks to ship them. I did not even look at the full ad, was just browsing, but yeah that is not good then. Link to comment Share on other sites More sharing options...
6-Speed Posted April 10, 2009 Report Share Posted April 10, 2009 I installed those mufflers on my GT500 and they sound really good IMO. Link to comment Share on other sites More sharing options...
SicShelby Posted April 10, 2009 Report Share Posted April 10, 2009 Mine just came yesterday. I got them from Black Vert Mafia Performance for $539 shipped. :happy feet: I see BOI has them for $539 shipped too: http://www.blueovalindustries.com/products.php?pid=99013360 For some reason the KR's are catching my eye too. Grabber, thanks for putting it all together! I'll definitely consider an H-pipe as well. Good stuff. How much for the H-pipe and who makes it? Gabe Link to comment Share on other sites More sharing options...
VaporDude Posted April 10, 2009 Report Share Posted April 10, 2009 For some reason the KR's are catching my eye too. Grabber, thanks for putting it all together! I'll definitely consider an H-pipe as well. Good stuff. How much for the H-pipe and who makes it? Gabe Conact Wes at Powerhouse Racing Performance. I have one that is going to go on hopefully today. The KR mufflers are a great addition. There is NO DRONE at all and when you put the petal to the metal, they just sound awesome. You can't go wrong with these mufflers. Here is the link to the H pipe: http://www.powerhouserp.com/ Link to comment Share on other sites More sharing options...
SicShelby Posted April 10, 2009 Report Share Posted April 10, 2009 Conact Wes at Powerhouse Racing Performance. I have one that is going to go on hopefully today. The KR mufflers are a great addition. There is NO DRONE at all and when you put the petal to the metal, they just sound awesome. You can't go wrong with these mufflers. Here is the link to the H pipe: http://www.powerhouserp.com/ The link doesn't work for me?? Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 Wes is having some server problems and his e-mail is down too. Link to comment Share on other sites More sharing options...
VaporDude Posted April 10, 2009 Report Share Posted April 10, 2009 Wes is having some server problems and his e-mail is down too. Was there a server bug released yesterday. It seems like there are too many sites that are having problems today. Link to comment Share on other sites More sharing options...
Grabber Posted April 10, 2009 Report Share Posted April 10, 2009 Was there a server bug released yesterday. It seems like there are too many sites that are having problems today. Wes was able to PM me....so I don't know. Link to comment Share on other sites More sharing options...
SicShelby Posted April 10, 2009 Report Share Posted April 10, 2009 Conficker? Link to comment Share on other sites More sharing options...
FIAMike Posted April 10, 2009 Report Share Posted April 10, 2009 Bill, I installed the KR's last week. They are perfect for the car. First drive they seemed a bit loud compaired to the stock mufflers but ever since the first drive I love them. VaperDude is correct no drone and at 1800-2000RPM they are pretty quiet. But put your foot in it and they really wake up. Grabber is correct there is a lot of welding slag that needs to be cleaned off. I just used mag polish and they cleaned up really nice. Install was easy just remove the hangers and slide the KR's in place. Was harder getting old mufflers off than getting KR's on. They lined up very well and did not need to make any adjustments. FIA Mike Link to comment Share on other sites More sharing options...
VaporDude Posted April 10, 2009 Report Share Posted April 10, 2009 Bill, I installed the KR's last week. They are perfect for the car. First drive they seemed a bit loud compaired to the stock mufflers but ever since the first drive I love them. VaperDude is correct no drone and at 1800-2000RPM they are pretty quiet. But put your foot in it and they really wake up. Grabber is correct there is a lot of welding slag that needs to be cleaned off. I just used mag polish and they cleaned up really nice. Install was easy just remove the hangers and slide the KR's in place. Was harder getting old mufflers off than getting KR's on. They lined up very well and did not need to make any adjustments. FIA Mike Ditto here on adjustments. Just hang em and sit back and admire. When you have the car in the garage, stand behind the car and let someone else do a cold startup. That is the fastest way to get a smile on your face. Link to comment Share on other sites More sharing options...
Bill Haleck Posted April 10, 2009 Author Report Share Posted April 10, 2009 Bill, I installed the KR's last week. They are perfect for the car. First drive they seemed a bit loud compaired to the stock mufflers but ever since the first drive I love them. VaperDude is correct no drone and at 1800-2000RPM they are pretty quiet. But put your foot in it and they really wake up. Grabber is correct there is a lot of welding slag that needs to be cleaned off. I just used mag polish and they cleaned up really nice. Install was easy just remove the hangers and slide the KR's in place. Was harder getting old mufflers off than getting KR's on. They lined up very well and did not need to make any adjustments. FIA Mike Mike, Thanks for your input. I appreciate all of the inputs regarding my inquiry on the KR Mufflers. Did you also change over to the H pipe as well. I wonder if changing over to the H-pipe will make all that much difference. I suppose that there must of been a good reason for Ford to do this on the GT500KR. What is your opinion? Link to comment Share on other sites More sharing options...
bullittmansparts Posted April 10, 2009 Report Share Posted April 10, 2009 I have an extra set of the KR's.....They are still in the sealed ford box. PM if interested Link to comment Share on other sites More sharing options...
cammerunderpressure Posted April 11, 2009 Report Share Posted April 11, 2009 Ditto here on adjustments. Just hang em and sit back and admire. When you have the car in the garage, stand behind the car and let someone else do a cold startup. That is the fastest way to get a smile on your face. I did this and I couldn't stop giggling! I don't know exactly why, but this has to be one of the best sounding cold start cars ever! Link to comment Share on other sites More sharing options...
FIAMike Posted April 11, 2009 Report Share Posted April 11, 2009 Bill, From what I understand the h-pipe gives a bit deeper exhaust note than the stock x-pipe. I've also heard the h-pipe will cause about a 4hp loss. I left the factory x-pipe and do not plan to change to the h-pipe. Either way the KR muffler is the way to go. Hope that helps, FIA Mike Link to comment Share on other sites More sharing options...
09VistaGT500 Posted April 11, 2009 Report Share Posted April 11, 2009 Got mine from Blue Oval Industries for $539.00 including shipping. Had them in about 3 days. Link to comment Share on other sites More sharing options...
Jody Posted April 11, 2009 Report Share Posted April 11, 2009 I used Soft Scrub Cleanser (kitchen/bath) to clean my weld stains off my mufflers. Worked good with a little elbow grease. Link to comment Share on other sites More sharing options...
bullittmansparts Posted April 11, 2009 Report Share Posted April 11, 2009 I have an extra set of the KR's.....They are still in the sealed ford box. PM if interested Mufflers sold to TS member. Link to comment Share on other sites More sharing options...
sfm6s1675 Posted April 11, 2009 Report Share Posted April 11, 2009 Ordered mine last Saturday from Buy Ford Racing, http://www.buyfordracing.com/shop/index.php Received them on Tuesday already, installed them this morning. All I can say is the smile on my face tells it all. "GT500 Special Mufflers" are them, they're $499 plus shipping, which I think was $33 I believe. That's about the cheapest I found. Link to comment Share on other sites More sharing options...
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