Shimano Ultegra RD-6870 SS Di2 Rear Derailleur (11-Speed)

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This is the Shimano Ultegra Di2 Rear Derailleur RD-6870 SS with short cage. The Ultegra Di2 series with electronic shifting is "pro-proven" as it is a direct trickle down from the Dura Ace group. It stands for state-of-the-art technology, proven in pro races, the technologies used in the  Ultegra 6870 11-speed series. The electronic shifting lets you concentrate on your performance.


  • Electronic adjustment
  • Saver function
  • Sealed bearing tension pulley
  • Wide gear ratio
  • Programmed motion

Color: Gray
Weight: 250g
Cassette Spacing:  Shimano/SRAM 11
Shifter/Derailleur Compatibility: Shimano Ultegra Di2
Largest Cog: 28
Chain Wrap Capacity: 33
Cage Length: Short

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This product was added to our catalog on July 29, 2014.