Shimano Ultegra Di2 RD-R8150 Schaltwerk | 12-fach | elektronisch | ohne Achseinheit Werkzeug it delivers stability in crosswinds

it delivers stability in crosswinds

X-Actuation™ & Zero Loss™: direct

The large 203 mm brake disc significantly increases braking performance and improves stability on long descents

8 mm clamp diameter

The XTR FC-M9020 crankset impresses with its feather-light

Shimano Ultegra Di2 RD-R8150 Schaltwerk | 12-fach | elektronisch | ohne Achseinheit Werkzeug it delivers stability in crosswindsUltra precise 12 speed Di2 Shifting compact & smartly connected. The Shimano Ultegra Di2 RD R8150 rear derailleur is the electronic heart of the 12 speed ULTEGRA R8100 group and combines rear derailleur, junction box, and wireless unit in one compact component. It offers the industry's fastest, most precise shifting function and controls all Di2 functions at the rear including LED status display, pairing, and adjustment mode. The uniform cage length