The Shimano Ultegra R8050 Di2 groupset offers the fastest shifting performance, the best brake properties, and the most durability you could ever want. The Ultegra R8050 has also been optimised for wider rims and tyres. Ergonomically shaped Di2 shifters, new covers for the Di2 buttons, and with improved adjustability when it comes to shifting options. Synchronized Shifting is available to set-up the shifting speed and options to your liking. Finally, the rear derailleur uses the Shadow Technology for a lowered, more protected profile which helps aerodynamics and reduces the chance of damage.