NG Jcob

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Select this power meter to upgrade your current Jcob cranks to ride with dual-sided power. Simply remove the crank spider, install the NG and you are good to go! Note: due to const ructive restrictions the NG for Jcob will only work with Jcob cranks that have the 3 bolt interface. Just released is the Shimano 4-bolt chainring version. Show more