bearing kits?

I need a rebuild kit for the linkage on my 85 gpz 750. Does anyone know where i can get a set. I checked all balls but they don't show any on ther website. I don't know who else might sell such a kit. Thank you for any help yoou can provide.

best way if found of finding hard to find bearings is,
look on the side of the bearing there should be a number,
then type it into yahoo or google and your find several places.
i had to do this with my old mechamex swing arm.

Oops. My mistake.