SRAM X1 TYPE 2.1 1x11V Long Cage Rear Derailleur Black

Based on the Groupesets the American brand's top-of-the-range XX1, the SRAM X1 rear derailleur 11 Speed rear derailleur gives you access to 1x11-speed technology at a more affordable price.

Featuring the same horizontal parallelogram design, the X1 11 Speed derailleur offers fast, precise shifting with less force. By limiting all movement to the horizontal axis, it also eliminates the problem of involuntary shifting.

This derailleur guarantees incredibly smooth, efficient shifting.
 

Ref: 7977595273382