Quick Summary
The Shimano Altus FC-M311 is a black crank set with 48/38/28 chainrings. It is described as a 7/8-speed chainset and uses Hyperdrive SG-X chainrings for fast and smooth gear shifts.
For buyers comparing chainsets, the key checks here are speed compatibility, bottom bracket type and the chainring sizes. This model is stated for use with 123 mm square taper bottom brackets.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Shimano, for buyers wanting a Shimano Altus chainset. |
| Model | FC-M311, the exact model reference. |
| Product type | Crank set / chainset, for bicycle drivetrain use. |
| Chainring sizes | 48/38/28, the triple chainring layout to compare against your gearing needs. |
| Colour | Black. |
| Speed compatibility | 7/8-speed compatible steel chainrings. |
| Bottom bracket fit | For use with 123 mm square taper bottom brackets. |
What to Compare Before Buying
- Bottom bracket fit: This chainset is stated for 123 mm square taper bottom brackets, so that fitting needs to match your bike.
- Speed setup: It is 7/8-speed compatible, so check that the rest of the drivetrain matches.
- Chainring sizes: The 48/38/28 arrangement gives a triple-ring layout, so confirm it suits the gearing you want.
- Crankset format: Make sure you want a complete crank set rather than a different chainring or crank specification.
Before You Decide
Check the FC-M311 model, the 123 mm square taper bottom bracket fit and the 7/8-speed compatibility before choosing an offer. Confirm the 48/38/28 chainring setup matches your drivetrain needs.
