Shimano RD-R8050 Ultegra Di2 Rear Derailleur 11 Speed

Stress-free operation is one of the most important features for road bike components. Ultegra leads in all-day riding comfort with smooth braking and shifting.

Ultegra is "pro-proven" as it is a direct trickle-down from the Dura-Ace groupset.

• Maintain race concentration with more intuitive shift control
• Sleek integrated appearance
• New low-profile design
• Optimized slant angle
• Shimano Synchronized Shift
• System communication with front derailleur
• Wide compatibility
• Shadow technology