Shimano Dura Ace Di2 7970A 10 Spd Rear Derailleur

Rear Derailleur | Product Code: SHIM-178493

Out of Stock

Digital Integrated Intelligence or Di2: with programmed automatic motion at the touch of a switch the Dura-Ace Di2 rear derailleur is quick, smooth and effortless, making for unmatched drivetrain efficiency.


  • Di2 Shifting makes changing gear easier and faster than ever before
  • The integrated CPU keeps track of the front and rear derailleurs to keep the driveline running as efficient as possible.
  • Less risk of the chain dropping
  • 11-27T wide gear ratio capacity will cater for compact set-ups as well as the traditional road double 
  • Full carbon fibre inner and outer pulley plates enhance rigidity 
  • Titanium B axle bolt for further weight savings .
  • High tolerance cold forged aluminium linkl lates 
  • Pulleys are made of tough DuPont Zytel for longer life and less chain noise.
  • 10-speed Dura-Ace Di2 compatible.
  • Weight is 225 grams.