42 tooth 530 pitch rear sprocket cbr 1000 rr4

hi chaps anyone got one they want to part with just want to see if i can get away with my chain lenth ive been told the rr6/7 wont fit is that right

 

I have a couple in the garage. Dunno who told you they won't fit, its a good mod for an 04, changed mine very early on. I did try -1 on the front, as well, but felt that a bit too flighty!

 

I have one on my rr5 and makes it much nicer to ride IMO