Shimano Ultegra RD-R8150 Di2 12-speed Rear Derailleur

Shimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur E-Tube

• The rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides ANT+ connection to 3rd party devices

• Button on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirements

• Sleek appearance with Low profile Shadow design construction reduces risk of damage in a crash

• Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift

• High tolerance cold forged aluminium link plates and body construction is extremely light and durable

• Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting

• 12-speed E-tube Di2 compatible

• Wide gear ratio compatible up to 11-34T

The Ultegra R8150 derailleur uses our Shadow design with Di2 technology, ensuring shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear.

The Ultegra R8150 12 speed Di2 rear derailleur is our first wireless system and is packed with new features but still retaining our high performance Di2 shift technology.