Shimano Deore RD M4120 Rear Derailleur SGS 10 Speed 11 Speed Hyperglide Bicycle

1 x Shimano DEORE 10/11-speed RD-M4120 Rear Derailleur. Technology: Shadow RD+. teeth small sprocket: 11T. Front Difference: 10T. 100% authentic, without the original box. Model: RD-M4120. teeth large sprocket: 42T.

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