Quick Summary
The Huazu Altus RD-M310 rear derailleur is a direct-mount rear derailleur for 7/8 speed drivetrains. It is described as an Altus model and as a long cage, with a stated upper normal traditional derailleur design.
For buyers, the key checks are the exact RD-M310 fit, the 7/8 speed setup and the stated rear sprocket and capacity figures. The product is presented as a direct-fit rear derailleur rather than a universal part.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Model | RD-M310 Altus. Match the exact model before choosing an offer. |
| Product type | Rear derailleur for a bike drivetrain. |
| Speed | 7/8 speed. Check that this matches the drivetrain on the bike. |
| Mounting | Direct mount / direct attach. Confirm the frame and hanger arrangement suit this fitting style. |
| Cage length | Long cage. Compare this with the drivetrain setup you need. |
| Max rear sprocket | 34T. |
| Total capacity | 43T. |
| Derailleur type | Upper normal traditional. |
| Colour | Black. |
What to Compare Before Buying
- Speed compatibility: This derailleur is stated as 7/8 speed, so the cassette or freewheel speed must match.
- Mounting style: It uses direct mounting, so the bike needs the matching direct-attach arrangement.
- Sprocket size: The stated maximum rear sprocket is 34T, which matters if the bike uses a larger largest sprocket.
- Capacity: The stated total capacity is 43T, so check it against the drivetrain range you need.
- Cage length: The long cage format should be compared with the chain wrap requirement of the bike.
Compatibility, Size and Fit
This derailleur is described as suitable for mountain bikes, road bikes and folding bikes. The main point to confirm is not the bike style alone, but the exact mounting arrangement, speed setup and rear sprocket size on the bike.
If the bike does not use a compatible direct-mount rear derailleur setup, this part will not be the right choice. Check the existing derailleur model, mounting method and drivetrain speed before ordering.
Before You Decide
Confirm the RD-M310 model, the 7/8 speed drivetrain, and the direct-mount fitting before choosing an offer. Also check the 34T maximum rear sprocket and 43T total capacity against the bike’s drivetrain needs.
