Quick Summary
The 18 Teeth Single-Speed Bicycle Freewheel Sprocket is a metal replacement part for a single-speed bicycle rear wheel hub. It is described as an 18-tooth sprocket with internal threads for fitting to the rear hub.
The part is intended as a replacement for a worn, damaged or broken original freewheel sprocket. If you are choosing between offers, check the tooth count and rear hub fit before buying.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Single-speed bicycle freewheel sprocket replacement part. |
| Tooth count | 18 teeth, so the sprocket spec needs to match the bike’s existing setup. |
| Material | Metal construction, which is the stated material for the part. |
| Fit type | Internal threads for rear hub fitting, so hub compatibility matters. |
| Use | Replacement for a worn, damaged or broken original sprocket on a single-speed bike. |
What to Compare Before Buying
- Tooth count: This part is 18 teeth. Check that the replacement matches the sprocket you are changing.
- Rear hub fit: It uses internal threads, so the rear hub specification needs to suit this type of fitting.
- Bike type: It is described for single-speed bicycles, so confirm that is the setup you have.
- Replacement need: Compare it with the sprocket you are removing to make sure the part and format match.
Before You Decide
Confirm the 18-tooth size and rear hub thread fit before choosing an offer. This part is for single-speed bicycle use, so it should match the setup on the bike you want to repair.






