SRAM X4 Rear Derailleurs MTB

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1:1 actuation (SRAM shifter compatible) 9/8/7 speed system compatible Min cog: 11T Max cog 34T Front difference 22T max Total capacity : 45T SRAM Model ID: RD-X4-A1 Attributes Max Front Difference 22T Maximum Cog 34T Minimum Cog 11T Primary Color Black Cage Long RD Capacity 45T Speed 7/8/9 Mount Standard Show more