Ask a Mechanic: Tuning Shimano Rear Derailleurs

Quick and accurate shifting is the hallmark of any well tuned bicycle. With mechanical rear derailleurs, they must be checked and maintained regularly to function at their full potential. Daniel Slusser, our expert bicycle mechanic demonstrates how to tune your rear derailleur from start to finish. Watch more Ask a Mechanic episodes here: https://www.youtube.com/playlist?list=PLe2rWZ6kNqvKKpTQoVEkw_JNf3whesHRL