I bought the 14's and put them on my 2009 Nightster and they squeak/creek like crazy. Its driving my nuts. anyone else have this problem or know how to fix it?

 

Why don't you just contact the manufacturer? Second option would be installing drag pipes

 

Their ad says 13" or 15"! If you haven't had them long then contact them, as Rich suggests.

 

loosen your bolts and re tighten them. also just your reload?