Quick Summary
The Shimano Zee FC-M640 is a 10-speed crankset with a 165 mm crank length and a 36T ring. It is identified by Shimano reference number FC-M640 and is paired here with a 68/73 mm bottom bracket.
This is a drivetrain component, so the key purchase checks are the exact crank length, ring size, and bottom bracket fit. Those details matter most when comparing it to the rest of your setup.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Shimano. A clear match for buyers looking for the Zee line. |
| Model | FC-M640. Use this to confirm the exact crankset variant. |
| Product type | Crankset. This is the drivetrain part that connects to the pedaling system. |
| Speed | 10 speed. Compare this with the drivetrain on the bike. |
| Crank length | 165 mm. Check that this length matches your fit and setup needs. |
| Ring size | 36T. Confirm that this tooth count works for your gearing preference. |
| Bottom bracket size | 68/73 mm. Make sure the frame setup matches this size. |
| Reference number | FC-M640. Useful for confirming the exact part. |
What to Compare Before Buying
- Drivetrain speed: This crankset is for 10-speed drivetrains. Compare that with the rest of your drivetrain so the parts match.
- Crank length: The stated length is 165 mm. Check whether that length fits your preferred setup.
- Ring size: The ring is 36T. Compare that number with the gearing you want.
- Bottom bracket fit: The listed size is 68/73 mm. Confirm that your frame and bottom bracket setup match.
Compatibility, Size and Fit
This crankset is tied to a 10-speed drivetrain and a 68/73 mm bottom bracket size. Those are the main compatibility checks before choosing an offer. If your bike uses a different drivetrain speed or a different bottom bracket size, compare carefully before buying.
What Is Included
The identified configuration includes the crankset and a BSA 68/73 mm bottom bracket.
Before You Decide
Confirm the FC-M640 model, 165 mm crank length, 36T ring, and 68/73 mm bottom bracket size before choosing an offer. Make sure the 10-speed setup matches your drivetrain.
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