Quick Summary
The Shimano RD-M370 Altus is a 9-speed rear derailleur in black with SGS specification. It is a rear gear component for a 9-speed drivetrain, so the key buying check is whether the rest of the drivetrain matches that setup.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Shimano, helping confirm the exact component family. |
| Model | RD-M370 Altus, the specific rear derailleur variant. |
| Product type | Rear derailleur for a bicycle drivetrain. |
| Speed | 9-speed, so it needs to match a 9-speed setup. |
| Cage | SGS, an important variant detail for choosing the correct version. |
| Colour | Black, which matters if you are matching existing parts or finish. |
What to Compare Before Buying
- Speed: This is a 9-speed derailleur. Compare it with the number of sprockets on the drivetrain you already have.
- Variant: The SGS designation is part of the exact model, so make sure it is the version you want.
- Finish: The derailleur is black, which may matter if you are replacing a visible part on an existing bike.
Compatibility, Size and Fit
Check that your bicycle drivetrain is set up for a 9-speed rear derailleur. The RD-M370 Altus should be matched with the correct drivetrain specification rather than chosen by appearance alone.
Before You Decide
Confirm the 9-speed specification, the SGS version and the black finish before choosing an offer. Make sure the derailleur matches the drivetrain on the bike it is meant for.






