Only thing I've heard is that the crash bars are redesigned as the ones Suzuki used to fit caused various levels of vibration for some owners. I get a slight tingle at exactly 4900RPM, but that's it.
Right, so now if you want the factory crash guards, just make sure they are the new design......I'm sure there is plenty of info here to help guide you. Just don't let the dealer tell you there was no difference, because there sure is......good luck!!
Oh Yea: '17 Aprilia Tuono Factory
'02 Daytona 955ce
'85 &'86 ZL900's