Shimano Ultegra RD-R8150 Di2 Rear Derailleur 12-Speed

With the fast and accurate Di2 shifting technology, the Shimano 12-speed Ultegra RD-R8150 rear derailleur is extremely versatile thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes.

- Compact design includes an integrated wireless unit, charger, switch
- Wider range capacity
- Max. low sprocket 34t
- LED status indicator
- Battery indicator, pairing, adjust mode etc.