Altus RD-M310

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Spring type: Top Normal Min cog: 11T Max cog: 34T Total capacity: 43T Max front difference: 20T Attributes Max Front Difference 20T Maximum Cog 34T Minimum Cog 11T Primary Color Bl ack Cage SGS RD Capacity 43T RD Spring Type Top Normal Speed 7/8 Mount Standard Show more