Quick Summary
The Relwears RD-TZ500 is a black rear derailleur for 6- or 7-speed bicycles. Its listed specifications include a direct-mount design, a plastic 11T guide wheel and support for a freewheel up to 32T. Confirm that the speed range, mounting interface and freewheel size match your bike before choosing it.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Model | RD-TZ500, also identified as RD-TZ500-6/7S; part number RD-TZ500-6/7S-Z. |
| Speed range | For 6- or 7-speed drivetrains. Check that this matches your bike’s drivetrain. |
| Mount and freewheel | Direct-mount design; supports up to a 32T freewheel. Verify both details against your bike’s setup. |
| Construction | Steel body with a plastic 11T guide wheel. |
| Color and quantity | Black; one derailleur. |
What to Compare Before Buying
- Drivetrain: Confirm your bicycle uses a 6- or 7-speed setup. Speed count alone does not establish compatibility with every shifter or drivetrain component.
- Mounting interface: The derailleur is described as direct-mount. Check that your frame and existing setup use a compatible mounting arrangement.
- Freewheel size: Compare your largest freewheel sprocket with the stated maximum of 32T.
Before You Decide
Match the RD-TZ500’s speed range and direct-mount design to your bike, and check the freewheel’s largest sprocket against the 32T maximum. If the fit of your setup is uncertain, confirm compatibility with a qualified bicycle mechanic.











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