428 chain sprocket for 1.25" axle

#1
Im using the mini cup tire and can't find any 428 sprockets to fit the 1.25" axle assembly.

Any ideas ?? And I'm needing around the mid 50's on tooth count. And thanks !

Only one I can find is off a Chinese taotao scooter and the bolt pattern dont match up to any hubs I can find.
 
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