"OK. There is the pre-2003 zx6r which is now the zzr (599cc). In 2003-2006 they had the zx6R and the zx6RR. The zx6R is the 636cc. The zx6RR is the 599cc. The 2003-2004's are the same just different colors. The 2005-2006's are the same just different colors. Both versions (03-04, 05-06) were redesigned from the ground up so their is not going to be much, if anything, that is going to be interchangable between the two. However, with the 03-04 zx6R and zx6RR, other than the engine and suspension are pretty much the same bike. The plastics, the frame, the wheels, brakes, exhaust, etc. are all the same. The same goes for the 05-06 zx6R and zx6RR. The zx6RR in those years have a different, more track friendly suspension. From what I hear, the 03-04 models of both the zx6R and the zx6RR are more track oriented (aggressive ergos, stiffer suspension, not as comfortable on the street) but the RR is even more track oriented. The 05-06 are kinda the same way. The zx6RR is more track friendly than the zx6R. Not saying that the 05-06 zx6R is no good on the track, just that I have heard a lot of guys putting the zx6RR suspension on their zx6R. Once, you've got your suspension set up on the zx6R then your are sitting another 36cc you can use. I have an 05 zx6R, and I have to say that having the extra 36cc is awesome on the street. 36cc doesn't sound like much but I think it makes a hell of a difference in the midrange. I am sure there is a bit that I missed but I gotta go, let me/us know if you have anymore questions. That is why we are here."
- The Brilliant Words of Shifty1
Ref:
http://www.zxforums.com/forums/gener...uestion-s.html
