Borrowing 9000 Dura-Ace technologies, the Ultegra 6800 crankset now has Optimum Power Transfer 4-arm design.

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Product Review

Borrowing 9000 Dura-Ace technologies, the Ultegra 6800 crankset now has Optimum Power Transfer 4-arm design.

  • New front derailleur chain guide design to reduce chain drops
  • Hollow glide chain rings 11 speed compatible
  • Made in Japan

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