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Posted by: Fastestdad
It should be stamped on the chain side plates. I believe it is a 428.
Posted by: 50Polaris
Does anybody know the chain size (520, 428, 420) and the number of links for a stock chain on a 2001 Polaris Scrambler 50. The chain is worn out and I want to replace it with an aftermarket O-ring chain if possible.