120 length chain, This chain can not be used on sprocket ratios of 14-46 or 13/48, or larger. For those sprocket ratios, please email AF1 Racing for alternative chain recommendations.
AF1 Racing highly recommends a new set of sprockets when replacing the chain. Since the bearing surfaces of the chain and sprockets are always meshed together they should always be replaced together to ensure the maximum life and strength of the final drive system in your Aprilia RS50.
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