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Universal Cycles -- Shimano SG-S7051 Alfine Di2 8 Speed Rear Hub [ISGS70518BL, ISGS70518AS, ISGS70518AL]
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Shimano Alfine SG-S7001 Internally Geared Disc Brake Rear Hub (Black) (Internal 8 Speed) (Centerlock) (10 x 135mm) (32H) - Performance Bicycle
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Shimano SG-C3001-7R Nexus Internally Geared Rear Hub (Silver) (Rim Brake) ( Internal 7 Speed) (3/8" x 130mm) (36H) - Performance Bicycle
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