I need to replace my exhaust doughnuts this fall and wanted some input on wether I should use the copper or stock doughnuts. Not sure if the copper ones have been around for long enough to show wether they last longer than the stock or cause damge to the headers. Thanks for any replies. 
APEX 06
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Their in both of my Apex's with no issue. My 08 MTX is Super Charged and has about 1000 miles on them and my 06 RTX has about 500 miles on that set.
Just ordered the set of 4 today from Sled Toyz. thanks for your reply 
Super Sled
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Go with copper. Will last forever, unlike crappy graphite stick ones. And there's enough miles on them to show no header damage. You're more likely tO get header damage from stock donuts when they wear out, which experience shows us they'll do every few thousand miles.
Crewchief47
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yamahatd said:Just ordered the set of 4 today from Sled Toyz. thanks for your reply
Packed up and waiting to go out tomorrow, thanks!
looking forward to having them installed and quieting down the exhaust leak!!!
