The Shimano 105 RD-R7000 11-speed rear derailleur has been improved to further reduce the operating forces at the shifter. However, it works just as reliably, quickly and accurately as the rear derailleurs of the Dura-Ace and Ultegra groups. Moreover, it shares the same technologies.
Both short and long cage versions give you the choice between a smaller shift range for the flat, or a longer range for steeper terrain. The Shadow RD design makes the rear derailleur more compact and provides more shifting stability. Furthermore, it is closer to the frame for better component protection.