GSXR Brake disc fit katana Wheel?

[SleekGS5]

hey guys, i just finished the katana rear wheel swap.  Everything looks great but i need a rear brake disc.  I found a 2001 GSXR disc for dirt cheap.  Wondering if it will fit the 2001 Katana wheel.  Both are 5 bolt...

[ben2go]

It is to small in diameter.

[werase643]

will it fit the rim....yes
will it be the same outside diameter as the GS....99% doubt it  there are 2-3 different GSXR rotor diameters over the yrs
will it be of a tolerable range....depends on if you want your pads to wear funny
do you use your rear brake enuf to care.....

go to ebc brake site
check diameter of replacement rotors and compare to what you want

best bet is buy the kat caliper bracket and get the proper diameter rotor