Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur

Special order. Contact Mad Duck Cyclery for supplier availability and estimated delivery.

Electronic rear derailleur for Shimano Ultegra 12-speed Di2 road systems. Compatible with 11-30T and 11-34T cassettes. Includes wireless communication and the system charging connection. Requires a compatible Di2 battery and wiring, sold separately.

Manufacturer images are representative; selected size, side, or gearing may differ visually.

Shimano specifications