OK so the standard rear bearing for the FJ wheel is 6304 dimensions are 20 id 52 od 15 thick. You would like to swap out your rear! but retain swing arm and axle pin for ease. All these other bearings have a 20mm bore
6004 20 42 12
6204 20 47 14
6804 20 32 7
6904 20 37 9
61704 20 27 4
Just did a very quick cross ref and a 96 / 05 r1 uses a 6205 25 52 15 so swap the bearings with 6304 (20 52 15) direct fit being 52mm on the o/d and correct thickness but you now have the 20mm bore :smile: happy day's . You can do this with many other wheels like XJR 12 &13, FJR 13, R6 the list goes on, yes some might need minor mods and no doubt centre spacer as this MUST match the inner race surface.
Remember the world is your lobster, if there is a wheel you like you will always find a way to fit it........ Anyone ever seen a FJ with wire wheels mmmm junk my R1 wheels and ...... no stop it.