A slipping chain usually means wear, dirt, or tension issues.
Common causes
- Stretched chain
- Dirty drivetrain
- Worn cassette
- Incorrect tension
1. Stretched chain
Chains lengthen over time.
Quick fixes:
- Measure chain stretch
- Replace if worn
2. Dirty drivetrain
Dirt stops smooth shifting.
Quick fixes:
- Clean chain with degreaser
- Lubricate properly
3. Worn cassette
Teeth wear down and slip.
Quick fixes:
- Inspect for shark‑fin shapes
What to try first
Clean and lubricate the chain.
When to call a professional
If slipping continues after cleaning.