Ultegra Di2 RD‑R8150

The Shimano Ultegra Di2 RD‑R8150 delivers ultra‑fast, ultra‑precise 12‑speed electronic shifting in a compact SHADOW design. With integrated charging, wireless connectivity, and wide cassette compatibility, it brings podium‑level performance to any road setup.

• Compact SHADOW design with integrated wireless unit, charger, switch, and LED indicator

• Compatible with 12‑speed 11‑30T and 11‑34T cassettes

• Super‑fast, precise Di2 electronic shifting

• Integrated D‑FLY wireless connectivity

• GS cage

• Maximum low sprocket: 34T

• Minimum sprocket: 11T

• Total capacity: 39T

• Weight: 262 g

• Primary color: Black

• Vendor Item #: IRDR8150F

Ideal for road cyclists who want the cleanest, fastest, most reliable shifting available, with wide‑range cassette compatibility and fully integrated Di2 functionality.