Shimano Ultegra Di2 6870 11-Speed RD-6800 Outer Plate & Plate StopPER PIN GS-TYPE - Y5YC98080 Shimano Small Parts Road Bike Ultegra Di2 6870 11-Speed Small Replacement Part for: Shimano RD-6800 Outer Plate & Plate StopPER PIN GS-TYPE Used as part of Shimano Bike Parts; Ultegra Di2 6870 11-Speed