Shimano Ultegra Di2 RD-R8150 Rear Derailleur

The Ultegra RD-R8150 12 speed Di2 electronic rear derailleur integrates the system charging port and a wireless connectivity unit all while delivering super fast precise shifting worth of any podium. A single cage length shifts cassettes from 11 - 30T to 11 - 34T bringing new versatility.

Features:

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

Specifications:

• Max Front Difference: 16T
• Maximum Cog: 34T
• Minimum Cog: 11T
• Cage: GS
• RD Capacity: 39T
• RD Spring Type: Shadow
• RD Weight: 262 g
• Speed: 12