A well-tuned bike can help make your riding smooth and efficient. Grinding gears, rubbing derailleurs, and squeaky chains are your bike's cry for help. Ready to learn how to prevent or eliminate these annoyances from your beloved bike? Join REI's expert bike techs for a workshop on how to care for and maintain your bike's derailleurs and chain. We'll tune derailleurs, adjust barrel adjusters, and diagnose common chain issues. Along the way, you'll learn best practices for care and cleaning with plenty of get-your-hands-dirty chances to practice. Bring your own bike or practice on one of ours.