Intro: A slipping chain makes cycling frustrating, but the fix is usually simple.
1. Worn chain
Chains stretch over time.
2. Dirty gears
Dirt stops the chain gripping.
3. Loose cable tension
Gears won’t shift properly.
4. Worn cassette
Old teeth cause slipping.
5. When to replace
If the chain skips under pressure.
Summary: Most slipping chains are caused by wear or poor tension.