Quick Summary
The Relwears Altus RD-M310 is a rear bike derailleur for 7/8-speed setups. It is presented as a direct rear installation part, so the main buying checks are speed compatibility, installation style, and the exact rear sprocket and capacity limits.
This is a cycling replacement component, so getting the correct version matters more than broad bike-type claims. Check that the 7/8-speed setup matches your drivetrain and that the rear derailleur configuration matches your bike before choosing an offer.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Relwears. Useful for matching the exact product line. |
| Model | Altus RD-M310. Check this model against your replacement need. |
| Product type | Rear derailleur. Intended for the rear of the bike. |
| Speed range | 7/8-speed. Match this to your drivetrain setup. |
| Rear sprocket limit | Maximum rear sprocket: 34T. Confirm this suits your bike’s drivetrain. |
| Total capacity | 43T. Compare this against the drivetrain requirement. |
| Installation style | Direct rear installation. Check that this mounting style matches your bike. |
What to Compare Before Buying
- Speed compatibility: This derailleur is for 7/8-speed setups. Make sure your drivetrain matches that range.
- Rear sprocket size: The stated maximum rear sprocket is 34T. Compare that with your cassette or freewheel setup.
- Total capacity: The stated capacity is 43T. Check that your drivetrain falls within that limit.
- Installation style: This model uses direct rear installation. Confirm that your bike accepts that setup.
Choosing the Correct Version
The main version checks here are speed range and mounting style. Confirm the 7/8-speed setup, the 34T rear sprocket limit, and the 43T total capacity before selecting an offer.
Before You Decide
Confirm that your bike uses a 7/8-speed setup, the direct rear installation style matches your frame, and the 34T rear sprocket limit and 43T capacity fit your drivetrain. For a replacement part, those checks matter most before you choose an offer.
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