SHIMANO ULTEGRA Road Bike Bicycle RD R8000 SS GS Rear Derailleur Short Cage Medium Cage SHIMANO SHADOW RD 11 speed|Bicycle Derailleur| - AliExpress
Shimano Ultegra R8000 2x11 Speed Groupset Left+right Shifter Front+rear Derailleur Ss / Gs Original Parts For Road Bike - Bicycle Derailleur - AliExpress
Shimano Shimano Ultegra RD-RX800-GS Rear Derailleur - 11 Speed, Medium Cage, Black, With Clutch - Grand Rapids Bicycle Co.