Shimano RD-R8050 Ultegra 11s Di2 Rear Derailleur w/ RIDEA RD6 C60 Big Pulley USE

Shimano Dura-Ace RD-R9150 Rear Derailleur 11-Speed Di2 Electronic Used

Shimano Ultegra RD-R8050 Di2 Rear Derailleur w/ RIDEA RDHL28 Hanger & Big Pulley

Shimano Ultegra Di2 RD-6870 Electronic Rear Derailleur Used

Shimano Dura-Ace RD-R9150 Rear Derailleur 11-Speed Di2 Electronic Used

Shimano Ultegra RD-R8000 SS Rear Derailleur 11-Speed Road Bike New

Shimano Dura-Ace Di2 RD-R9150 Rear Derailleur Electronic Used

Shimano Dura-Ace WH-9000 Front & Rear Hub Set Used Road Bike Parts