New to the site. I have a 2000 ZX6R with 40 000kms. It's time to change chain and sprockets. I'm thinking of changing ratio's for a little more fun. Has anyone with a similar bike to mine 00-02 6R changed their ratio's. I do lots of two lane highway riding and touring. I was thinking of going up a tooth or two in the rear. Any thoughts? And how much difference does it make in RPM in 6th gear?