Quick Summary
The black Aikolesa RD-TY300 is a direct-mount rear derailleur listed for 6- or 7-speed SIS indexed drivetrains. Its stated specifications include a 14-34T cassette range and 43T total capacity. Check the bicycle’s mounting interface and complete drivetrain before choosing it as a replacement.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Model and type | RD-TY300 rear derailleur. Match the model when comparing replacement parts. |
| Mount | Direct mount. Confirm that the bicycle frame uses a compatible interface. |
| Drivetrain | Listed for 6- or 7-speed SIS indexed systems. |
| Chain | Listed for 6-, 7- and 8-speed chains. Chain compatibility alone does not establish compatibility with the shifter and cassette. |
| Cassette range | 14-34T. Compare this range with the cassette on the bicycle. |
| Total capacity | 43T, as listed. Check the figure against the bicycle’s gearing requirements. |
| Color and quantity | Black; one item. |
Compatibility, Size and Fit
Gear count alone is not enough to confirm fit. Check the frame’s direct-mount interface, the SIS shifter and cassette, and the chain together. The listed mountain, road, gravel and touring applications do not establish compatibility with every bicycle in those categories.
What to Compare Before Buying
- Mounting interface: Confirm that the frame accepts a compatible direct-mount derailleur.
- Shifting system: Check that the bicycle’s indexed shifter and cassette match the stated 6- or 7-speed SIS use.
- Chain and gearing: Compare the chain speed, 14-34T cassette range and listed 43T total capacity with the existing drivetrain.
If fit or setup is uncertain, have a bicycle mechanic confirm compatibility and installation before riding.
Before You Decide
Match the RD-TY300 to the frame mount, shifter, cassette and chain. Check the listed capacity against the bicycle’s gearing, and use appropriate installation guidance for setup.
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