Quick Summary
The Shimano FC-M311-L is a front chainwheel with a 170 mm crank length, a 42/32/22T chainring setup, and a black finish. It is described as compatible with a chaincase and as intended for rear 8/7-speed drivetrains.
This is the kind of part where the exact version matters. Check crank length, chainring sizes, drivetrain speed, and whether the chaincase compatibility matches your bike setup before choosing an offer.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Shimano. Brand match helps confirm the correct part family. |
| Model | FC-M311-L. Keep this exact model in mind when comparing options. |
| Product type | Front chainwheel. The buyer should match the part type to the intended replacement. |
| Crank length | 170 mm. This measurement should match the needed crank length. |
| Chainring sizes | 42/32/22T. Compare the tooth count with the setup you need. |
| Drivetrain speed | Rear 8/7-speed. Check that this matches the drivetrain on the bike. |
| Finish | Black. Color can matter for matching the existing build. |
| Compatibility | Chaincase compatible. Confirm that this fits the intended chaincase setup. |
What to Compare Before Buying
- Crank length: This model uses 170 mm. Match that length to the bike setup you are replacing.
- Chainring configuration: The chainwheel is 42/32/22T. Compare that tooth pattern with the gearing you need.
- Drivetrain speed: It is intended for rear 8/7-speed use. Confirm the bike uses the same speed range.
- Chaincase fit: The part is chaincase compatible. Check that the chaincase setup on the bike is compatible.
- Model match: FC-M311-L is the key identifier. Use it to avoid ordering the wrong chainwheel variant.
Before You Decide
Confirm the FC-M311-L model, the 170 mm crank length, and the 42/32/22T chainring setup before selecting an offer. Also make sure the rear 8/7-speed setup and chaincase compatibility match your bike.
Planning Your Replacement
Before installing a replacement chainwheel, it helps to compare the current crank length and chainring pattern with the part you are replacing. That simple check reduces the chance of ordering a version that looks close but does not match the bike’s setup.
Check the Crank Interface
Matching the crank length and chainring sizes does not by itself confirm that a replacement fits the bike. Check the crank attachment interface and chainline against the existing setup or the bike’s specifications before choosing this part.
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