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Amazon.com : SHIMANO DH-S501 Alfine Dynamo Disc Hub (32H Front, Black) : Bike Hubs : Sports & Outdoors
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Amazon.com : SHIMANO Alfine 11-Speed Internal Geared Bicycle Disc Brake Hub - SG-S7001-11 (Silver - 32H, 135X187MM) : Sports & Outdoors
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