Your stock chain is a high quality chain. Don't replace it until it's worn enough to warrant a new one. Then you can look at "better" chains in the after market. X's are good ,as are O ring,with cost being more a factor when the time comes. Check the rated strengths for the various brands,as well as the type of new sprockets you will get at the same time. 520 kits are around if you want lighter duty/weight,and you can go heavy duty with a 530 chain if you need more meat for off road/ longevity.
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