11-speed double derailleur.
Light shifting with optimal precision.
Revised actuation ratio in combination with ST-9000 pushbuttons and polymer-coated cables.
Less travel on the lever, which reduces effort.
New lever arm design for larger diameter and easy change.
Same effort in any gear range when shifting.
New anchor screw with the frame that maintains the correct position, even when pedaling with high torque.
Capacity: 16D.
Weight: 66g.
