if there a 4/156 bolt pattern. yes they will. think the back rims on a 99 sportsman were 10" rims the stock rims for a 08 sportsman are 12" rims. i know the rims from my 08 sportsman will fit on a 00' sportsman. they only reason you have 2 differnt parts numers are becuse one is a 12" and one is a 10" rim.
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