Shimano derailleur pulleys for Ultegra 11s (RD-6800/6870)

Shimano derailleur pulleys for Ultegra 11s (RD-6800/6870)

Set of rear derailleur pulleys valid for Shimano Ultegra 11s (RD-6800/6870).

The wheels or pulleys of the change are responsible for transmitting the movement of the change to the chain and regulate its tension, therefore, they are parts subject to wear and are responsible for the proper functioning and smoothness of the change.

They are one of the most forgotten parts in the maintenance of the transmission and are very easy to control and replace (you just have to pay attention to the marks that indicate the direction of rotation and which is the upper and which is the lower).

It is important to make sure that they are compatible with our change.