Buje trasero Shimano Nexus SG-4R31 4 velocidades engranaje interno plateado Japón aleación atornillable

Markings on shell: "Shimano Nexus" and "SG-4R31 JAPAN". Does not spin freely; might need internal service. Includes axle nuts; no cog, circlip, or shifter parts. Line: Nexus. Model: SG-4R31 (4-speed internal gear rear hub).

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