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Sram XX1 Eagle B2 Rear Derailleur 12 Black | RD-XX-1-B2

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Available in store

Article number: RD-XX-1-B2
SKU: 00.7518.139.000

You may need one of these.



  • Updated cage provides better chain retention and more precise shifts.
  • Compatible with 10-50t and 10-52t cassettes.


  • Primary Color: Black
  • Speed: 12
  • Maximum Cog: 52T
  • Minimum Cog: 10T
  • RD Capacity: 42T


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