Shimano Ultegra 11 Speed Di2 Rear Derailleur RD-6870-SS

Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.

• Precise, lightning-fast shifts across an 11-speed cassette
• More compact and lighter
• E-tube connections to simplify installation
• Automatic crash protection moves the cage out of harm's way
• Wide link design to reduce shifting deflection
• Weight: 250g