Shimano 105 R7000 GS Shadow rear derailleur

Rear derailleur. The RD-R7000 rear derailleur features Shimano’s Shadow RD design, which gives the derailleur a lower profile and more stable operation.
Race proven performance: The Shimano 105 2x11-speed Rear Derailleur RD-R7000 GS
The optional long cage rear derailleur (RD-R7000-GS) can accommodate up to an 11-34T cassette and is designed with a low profile SHIMANO SHADOW RD style to tuck it below the cassette and chainstay.
Coming with the high-end aesthetic and race characteristics of its Dura-Ace and Ultegra big brothers, the new 105 series also considers that most riders will use their bikes for purposes other than competitive racing. 105 is Shimano’s first level 11-speed groupset for those who are seriously committed to road bike riding, but that definition now becomes broader with the inclusion of superior handling and adaptable control to master different riding situations.