Quick Summary
The CNC Rear Derailleur is a 10-speed rear derailleur for Shimano and SRAM setups. It is described as a direct-mount design, so mount type is the first thing to confirm before ordering. That makes the fit check more important than the product name alone.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Product type | Rear derailleur for bike drivetrains. |
| Speed | 10-speed, so it should match a 10-speed setup. |
| Mount type | Direct mount. Check the bike’s rear derailleur mount before choosing an offer. |
| Compatibility | Listed for Shimano and SRAM use. |
| Material | Aluminum alloy. |
What to Compare Before Buying
- Speed: This derailleur is for 10-speed systems. Match it to the drivetrain speed on the bike.
- Mount type: It uses a direct-mount style, so compare that with the mount on the existing bike frame or hanger setup.
- Brand system: It is listed for Shimano and SRAM. Check that the rest of the drivetrain matches the intended setup.
- Mounting style: The direct-mount format is different from a hub bolt mount, so compare the replacement part carefully before ordering.
When to Consider a Different Option
Choose a different derailleur if the bike does not use a direct-mount setup or if the drivetrain is not 10-speed. A different option is also worth checking when the current bike uses a mount style that does not match the replacement part.
Before You Decide
Confirm the bike’s mount type, drivetrain speed and Shimano or SRAM setup before choosing an offer. The main buying check for this part is the rear mount style, since the derailleur is direct mount rather than hub bolt mount.





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