Quick Summary
The Shimano Altus FC-M371 is a crankset with a 170 mm length, a 9-speed setup, and 48/36/26t chainrings. It also uses a square taper JIS spindle interface and has a black finish. The chain guard is included.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Product type | Crankset for drivetrain use. |
| Brand | Shimano. |
| Model | Altus FC-M371. |
| Crank length | 170 mm, which should match the rider and bike setup. |
| Speed | 9-speed compatibility. |
| Chainrings | 48/36/26t chainrings. |
| Spindle interface | Square taper JIS spindle interface. |
| Finish | Black. |
| Included item | Chain guard included. |
What to Compare Before Buying
- Spindle interface: This crankset uses a square taper JIS spindle interface. Confirm that your bottom bracket or frame setup matches that interface.
- Speed: It is set up for 9-speed drivetrains. Match it to the drivetrain speed on the bike.
- Chainring sizes: The 48/36/26t chainrings affect gearing. Compare them with the range you want.
- Crank length: The 170 mm length should fit your bike and riding position needs.
- Included guard: A chain guard is included, which matters if you want that configuration.
What Is Included
- Shimano Altus FC-M371 crankset
- Chain guard
Before You Decide
Confirm the 170 mm crank length, the square taper JIS spindle interface, and the 9-speed setup before choosing an offer. Also check that the included chain guard matches the configuration you want.
How the Chainring Sizes Affect Gearing
The 48/36/26t figures are the tooth counts on the three front chainrings. At the same rear cog, a smaller front ring generally makes pedaling easier, while a larger ring gives a higher gear. The rear cassette also affects the bike’s overall gear range, so consider its range alongside these chainring sizes.










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