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Shimano Dura-Ace Di2 RD-9070 Rear Derailleur

$574.99 $699.95 18% off

Item # SHI0620

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  • One Color, One Size ($574.99)
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Item # SHI0620

The new boss.

Shimano’s latest electronic rear derailleur, the Dura-Ace 9070 seen here, represents the pinnacle of bicycle and electronic engineering. The biggest difference between this and the previous generation of electronic Dura-Ace is the switch to the E-Tube connectors that first made an appearance on Ultegra-level bits. This makes compatibility and programmability consistent across each of Shimano’s electronic groups and allows a near-infinite level of customization. The derailleur you see here will auto-adjust itself, move itself out of the way in the event of a crash, and handle up to a 28-tooth cog. If you’re putting together a dream build, Di2 is the icing on the cake.

  • E-Tube-compatible
  • 11-speed derailleur with a 28-tooth maximum cog
  • Programmable shifting
  • Simplified cable routing over 7970

Tech Specs

[body] alloy
Pull Type:
Actual Weight:
One Color, One Size: 217g
Recommended Use:
cycling, cyclocross
Manufacturer Warranty:
3 years

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Unanswered Question

Is it actually correct to state that "9070...

Is it actually correct to state that "9070 operates with both 10- and 11-speed cassettes"? Emailing Shimano directly resulted in the advice from their Technical Support team that the only way to run the new 9070 Di2 system with a 10-speed drivetrain is to use the Ui2 derailleur. RD-9070 only works with a 11-speed drivetrain. Can you confirm what's the actual situation and how, if possible, 9070 Di2 can be made to run 10-speed?