Quick Summary
The Shimano FD-M310 is a front derailleur with a Top-Swing, dual-pull, band-type design. It is identified by the FD-M310 reference number and is made for mountain double or triple setups. The stated band size is 34.9 mm, with 31.8 mm and 28.6 mm adapter sizes noted in the product name.
If you are comparing offers for this derailleur, the most important checks are the mounting size, the routing style, and the drivetrain setup it is meant to match.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Shimano. Useful for matching the part to an existing setup. |
| Model | FD-M310. Check this model number against the part you need. |
| Product type | Front derailleur. This is the front shifting component on the bike. |
| Design | Top-Swing, dual-pull. Confirm the routing and design style match your build. |
| Mounting type | Band-type with 34.9 mm stated size and 31.8 mm and 28.6 mm adapter sizes noted. |
| Intended drivetrain | Mountain double or triple. Check that your chainring setup matches this type. |
| Chainring range | 42/48T. Make sure the chainring size suits the bike. |
What to Compare Before Buying
- Mounting diameter: The stated band size is 34.9 mm, with 31.8 mm and 28.6 mm adapter sizes also noted. Match the clamp setup to your frame.
- Routing style: This model uses a dual-pull design and is compatible with top or bottom routing. Check your cable path before choosing it.
- Drivetrain setup: It is described for mountain double or triple use. Confirm that your front chainring setup fits that format.
- Chainring size: The 42/48T reference is part of the product name. Compare it with the chainring range you need.
Choosing the Correct Version
Front derailleurs are easy to mix up by mount size, cable routing, and drivetrain setup. For this model, confirm the FD-M310 reference number, the 34.9 mm band-type size, and the top or bottom cable routing before you choose an offer.
Before You Decide
Confirm that the FD-M310 model, the band-type mount size, and the dual-pull routing match your bike. Also check that your front drivetrain uses the stated mountain double or triple format and the 42/48T chainring reference.
Follow the bike manufacturer’s and component manufacturer’s instructions for installation and adjustment.
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