What are leadership roles?

Leadership roles: Small rolls that are located in the chain tensioner of the rear derailleur. These guide the chain from the chain leaves of the crank, cleanly through the rear derailleur towards the sprocket package.

Leadership roles:
Small rolls that are located in the chain tensioner of the rear derailleur. These guide the chain from the chain leaves of the crank, cleanly through the rear derailleur towards the sprocket package.

Relevant contributions:
Set bicycle circuit, Clean the bike chain