How to Loosen a bike's stiff chain link
If you've been experiencing a problem with shifting and hear a constant sound near your chain, you may have a stiff chain link. This should be addressed so that you no longer experience any problems with shifting that can result in possible injury.
In this video tutorial, you'll find out how to locate the stiff chain link and what you need to do in order to loosen it. Good luck, be safe, and enjoy!