How a Rear Derailleur Works

In order to service and finetune the rear derailleur, we need to first understand how it works. This video will explain the function of each component that makes up the rear derailleur system, including the pulleys, barrel adjuster, limit screws, and index shifter. Questions or comments Leave them below See all our derailleur videos in our Derailleurs Shifting playlist For a textbased walkthrough of this information: Subscribe: Like: Follow: Fix It: Did you know that Park Tool is the, 1 resource for bicycle repair education Visit our YouTube Channel: Visit the Repair Help section of Check out The Big Blue Book of Bicyc