ya i tryed the 900rr back wheel with no caliper bracket on thats how it fits but u cam try it good luck

 

The only thing about putting a bigger tire on the back is, if that chain touches that tire, it is gonna screw it up and has a chance of snapping that chain also. I saw a guy that put a bigger tire on his R1 do the same thing. He was in a wheelie when it snapped though, luckily he didnt wreck it but the chain came back around and cracked his crank case.

Daniel Thompson