This part mounts between the derailleur hanger and the rear derailleur.
It shifts the position of the derailleur rearward to improve efficiency and range with larger sprockets like the 46T / 50T.
Details:
Distance between holes: 22mm.
Size: 45 x 21mm.
Compatible with Sram and Shimano.
NOT compatible with Shimano Shadow
Compatible with: 10/11 speed
Weight: 11g