# Chain and sprocket kit

> A chain and sprocket kit is the front sprocket, rear sprocket and chain that make up the final drive to the rear wheel.

- **Also known as:** Zincir dişli, Zincir seti, Zincir dişli takımı, Chain kit, Sprocket kit
- **Turkish term:** Zincir-dişli seti
- **Category:** [Chain & Sprocket Kits](https://motorsikletparcasi.com/en/category/chain-and-sprocket-kits)
- **Page:** https://motorsikletparcasi.com/en/glossary/chain-and-sprocket-kit

Because the parts wear together, replacing them **as a kit** is recommended. You need three things to choose one: the chain size (e.g. 428, 520), the number of teeth on the front and rear sprockets, and the chain's link count.

## Signs it needs replacing

- The chain adjusters have reached the end of their travel
- The chain can be pulled well away from the back of the rear sprocket
- Pointed or hooked sprocket teeth, stiff links

Use our [gear ratio calculator](https://motorsikletparcasi.com/en/tools/gear-ratio-calculator) to see the effect of changing teeth, and our [chain length calculator](https://motorsikletparcasi.com/en/tools/chain-length-calculator) for the link count.

## Related terms

- [O-ring chain](https://motorsikletparcasi.com/en/glossary/o-ring-chain): An O-ring chain has rubber rings between the link plates that seal grease inside the pin and bushing for longer life.
- [Chain slack](https://motorsikletparcasi.com/en/glossary/chain-slack): Chain slack is the total up-and-down movement of the lower chain run measured midway between the sprockets.
- [Final drive ratio](https://motorsikletparcasi.com/en/glossary/final-drive-ratio): The final drive ratio is the rear sprocket tooth count divided by the front sprocket tooth count; it sets how engine power is geared to the wheel.
- [Swingarm](https://motorsikletparcasi.com/en/glossary/swingarm): The swingarm is the rear suspension arm that connects the rear wheel to the frame and pivots up and down with the shock.

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- Source page: https://motorsikletparcasi.com/en/glossary/chain-and-sprocket-kit
- Last updated: 2026-10-09
- Türkçe sürüm: https://motorsikletparcasi.com/sozluk/zincir-disli.md
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