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         OK, 
        
 Upper Bearing :-
 
 Outside Diameter - 46.97mm
 Internal Diameter - 24.92mm
 
 Lower Bearing :-
 
 Outside Diameter - 54.97mm
 Internal Diameter - 29.92mm
 
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 The old bearnings do have some number stamped on them, not sure what these mean but here they are, it might help!
 
 Upper - 32005J
 Lower - 32006JR
 
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