Adjusting derailleurs may appear mysteriously difficult to the uninitiated. Watch as Art’s pro mechanic Daniel Slusser reveals the secrets of Shimano mechanical derailleur tuning in this quick, easy to understand video.
Here is another tip not mentioned in the video: make sure that your derailleur hanger is straight and tight. If the hanger isn’t straight, even the most experienced mechanic working with the best components will be able to generate mediocre shifting performance at best.
Shop Shimano road rear derailleurs by clicking on the link.