SRAM XX1/X01 11V Rear Derailleur Gears #00.7518.025.000 Black

These rollers very high-end pebbles offered by SRAM are designed for the derailleur rear derailleur XX1 and X01. They feature smooth-running, long-lasting ceramic bearings.
 
Ceramic balls reduce friction to a minimum, while lightening parts and increasing their rigidity! Your derailleur will thus gain in performance and precision.
 

Ref: 9223789773149