If everything is pretty much the same on them, the measurements and what not, then why not find a cheaper alternative? I cannot find the post I found on here not too long ago, some guy used different boots from a different bike in which I recall it was the ninja 900's boots, and he said they worked great. Being a college kid with a part time job hell I am gonna find the cheaper deal, as long as they work though. Just trying to confirm on here that the ninja 900's indeed work, otherwise I have no other choice to buy the originals.