Shimano RD-R8150 Ultegra DI2 rear derailleur

The ULTEGRA RD-R8150 12 speed Di2 electronic rear derailleur integratesthe system charging port and a wireless connectivity unit all whiledelivering super fast, precise shifting worth of any podium. A singlecage length shifts cassettes from 11-30 to 11-34 bringing newversatility.

• Compact SHADOW design includes an integrated wireless unit, charger, switch and LED status indicator.
• Wider range capacity: compatible with 11-30 and 11-34T 12-speed cassettes
• Super fast shifting
• Integrated D-FLY Connectivity
• Maximum low sprocket: 34T