Does anyone know what needs to be done in order to fit an 03 electraglide rear 9 spoke wheel to a 00 road king? Is there different bearing i.d.'s,spacers...Thanks Beanbag

 

Change the bearings from 1" to 3/4".

 

The bearings, spacers, inner sleeve and the wheel all have different part numbers. If it were only the bearings, the need for a new wheel part number would not be needed.
I would suggest that the bearing bores in the wheels are different to meet the differences in possible bearing thicknesses.
For whatever reason...........I would not just "Change the Bearings".

 

When you order chrome nine spoke wheelsyou can choose either 3/4" bearings or 1" bearings to be fitted to the wheels, so without actually having fitted 2003 wheels to an earlier model I think you would get away with just swapping the bearings and spacers.

 

I just did it today. You are correct, spacers & 3/4" bearrings.
[ul][*]The 02 thru 07 wheels have a larger clearance hole for the axle sleve spacer, A 2000 thry 2001 have a smaller one. You can put a late model wheel on an earley model (2000 to 2001) but not a earley model onto a late model as the 1/8" wall spacer will not fit through the hole.[/ul][ul][*]On the new 08 bearings, they are 25mm and thinner in width. The outer spacers would have to be made longer just for your reference only. [/ul]
As far as this thread goes,

(inner) axle sleave spacers (what HD calls them). & 3/4" bearings.