Brand new Shimano Dura-Ace FD-R9250 Di2 12-Speed Rear Derailleur. Bought from Team EF bike sale on a new bike. I just wanted the frameset so I removed it. Unused except for installation by EF's mechanic and uninstallation by me.

Evolved Di2 Technology & Precision Shifting
The Dura-Ace RD-R9250 rear derailleur features a Shadow design and comes with integrated D-FLY connectivity so you can pair with Bluetooth & ANT+ compatible devices. It connects to the battery via an E-Tube wire.

Dura-Ace R9200's new Di2 platform showcases Shimano's most advanced drivetrain technology and shifting performan...