Shimano Ultegra Rear Derailleur RD-RX800


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  • SHIMANO SHADOW RD+ (2×11-speed)
  • Chain Stabilizer mechanism adopted from MTB design
  • ON/OFF switch
  • Compatible with current road DUAL CONTROL LEVER
  • Max. front difference: 16T
  • Total capacity: 39T
  • Low sprocket: Max. 34T/Min. 28T
  • Top sprocket: Max. 12T/Min. 11T


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