Quick Summary
The Shimano Tourney RD-TY300-SGS is a black rear derailleur for 6- or 7-speed mountain bicycles. It is described as a bracket-attachment model with SIS rear index shifting.
The listed details also note an SGS cage, 13 tooth pulleys, and support for wide range gearing with 34 tooth sprockets. Those are the key points to compare if you are choosing a replacement derailleur for a compatible drivetrain setup.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Shimano, a clear brand identifier for the part. |
| Model | RD-TY300-SGS, the specific rear derailleur model. |
| Product type | Rear derailleur for a bicycle drivetrain. |
| Speed | 6/7-speed, so the drivetrain must match that range. |
| Color | Black. |
| Attachment | Bracket attachment. |
| Shifting | SIS rear index shifting. |
| Cage | SGS cage. |
| Reported sprocket support | 34 tooth sprockets. |
| Pulleys | 13 tooth pulleys. |
What to Compare Before Buying
- Speed range: This model is for 6- or 7-speed drivetrains. Match it to your drivetrain before buying.
- Attachment style: It uses bracket attachment, so confirm that your bike uses the same mounting setup.
- Cage length and gearing needs: The SGS cage is noted for wide range gearing support, so compare your drivetrain layout and sprocket setup.
- Rear sprocket size: The listed 34 tooth sprocket support is an important check if your drivetrain uses a larger rear sprocket.
Before You Decide
Confirm the 6/7-speed drivetrain match, bracket attachment, and the exact mounting setup on your bike before choosing an offer. If your drivetrain or rear sprocket setup differs, a different derailleur version may be needed.
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