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    Shimano Nexus & Alfine Cog/Sprocket (21 Teeth)

    Sports & Outdoors ·

    $25

    21 Teeth, Shimano Nexus Sprocket. Will work with either 1/8" or 3/32" chains. Fits coaster brake and Internally geared hubs with 3-tab spline pattern drivers. Fits Nexus & Alfine hubs. This is the standard 21 teeth cog for the Nexus and Alfine hubs for smooth pedalling at cruising speed.

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