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Bicycle chain
Also called: bike chain
The chain that carries pedaling force to the rear wheel. If it keeps coming off, derailleur adjustment or worn chainrings can also be the cause, so measure the wear and find the cause before replacing it.
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When you'd need this
- My chain keeps falling off
- My chain is rusty and stretched
Measure and check before you buy
- Number of speeds (8, 9, 10, 11, etc.)
- Number of links
- Chain width
- Drivetrain brand and model
- Chain series and joining method
Safety: Caution: replacing it requires a chain tool.