zx6 or zx6rr
Here's a little info for you. The zx6 has more mid range pwer b/c of the extra 37cc's. The RR is exactly what it says, Race ready. Kawasaki can't race the 6r on the track b/c of 636cc's if don't plan on moding the bike you buy the 636 is a better buy in my opion. I chose the 6RR though. The reason behind it was; i planned to mod it which I have done (internally) and it was supposed to be the only one 600 class in kawa green. apparently the consumers wants changed that. Hope that the infor helped.
Here's a little info for you. The zx6 has more mid range pwer b/c of the extra 37cc's. The RR is exactly what it says, Race ready. Kawasaki can't race the 6r on the track b/c of 636cc's if don't plan on moding the bike you buy the 636 is a better buy in my opion. I chose the 6RR though. The reason behind it was; i planned to mod it which I have done (internally) and it was supposed to be the only one 600 class in kawa green. apparently the consumers wants changed that. Hope that the infor helped.