Shimano Bottom Bracket Spacer - FC-M760
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Product Information
Full details
The Shimano Bottom Bracket Spacer (Part Number Y1F813000) is an essential component for bicycle mechanics and cycling enthusiasts looking to dial in their drivetrain's chain line. Designed specifically for external bearing bottom bracket systems, this 2.5 mm spacer ensures your crankset is positioned correctly to provide smooth shifting and optimal power transfer. While it is a simple, high-quality genuine Shimano component, users must be careful to check their specific bottom bracket shell width and crankset requirements before installation to avoid spacing errors.
All features
| Model Part Number | FC-M760 |
|---|---|
| Brand | Shimano |
Extended Product Information
FAQs
Is this spacer compatible with non-Shimano cranksets?
This spacer is designed for Shimano external bearing systems. While it may physically fit other brands, it is best to use manufacturer-specific parts to ensure compatibility.
Do I need to grease the spacer during installation?
It is recommended to apply a light layer of waterproof bicycle grease to the threads of the bottom bracket cups, but the spacer itself does not require specific lubrication.
Can I stack multiple spacers?
You can use multiple spacers if your specific frame setup requires it, but always follow your crankset manual to ensure you do not exceed the recommended total spacing.
Where does the spacer go?
For most Shimano external bottom brackets, this spacer goes on the drive-side cup before you thread it into the frame.
What is the thickness of this spacer?
This spacer is exactly 2.5 mm thick.
Is this part compatible with press-fit bottom brackets?
No, this specific spacer is intended for threaded external bearing bottom bracket cups.
Troubleshooting
Crankset has lateral play after installation
Verify that all required spacers are installed correctly. You may need to add or remove spacers based on your frame's bottom bracket shell width (68mm vs 73mm).
Difficulty shifting to the smallest chainring
Improper chain line spacing can cause shifting issues. Check that the spacer is placed on the correct side (typically drive-side) and that the bottom bracket cups are fully seated.
Pros and Cons
Pros
- Ensures correct chain line for efficient pedaling
- Genuine OEM part ensures perfect fit
- Easy to install during bottom bracket maintenance
- Helps prevent drivetrain noise caused by improper spacing
Cons
- Only provides 2.5mm of spacing; not adjustable
- Requires proper tools for bottom bracket removal/installation
- Not compatible with all bottom bracket types
Setup, Compatibility & Care
To install the spacer, first remove your crankset and external bearing bottom bracket cups. Slide the spacer onto the drive-side bottom bracket cup threads before threading the cup into the frame. Ensure the cup is tightened to the manufacturer's specified torque settings. This spacer is compatible with:
| Model Series | Description |
| :--- | :--- |
| SM-CR80-A | Chainring Set |
| SM-CR80 | Chainring Set |
| FC-T781 | Trekking Crankset |
| FC-T780 | Trekking Crankset |
| FC-T661 | Deore Crankset |
| FC-T551 | Trekking Crankset |
Regularly inspect the bottom bracket area for signs of dirt ingress or loosening during your routine bike maintenance schedule.