Shimano FC-M552 Double Gear Fixing Bolt - Multicolor
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Product Information
Full details
The Shimano FC-M552 Double Gear Fixing Bolt set is an essential maintenance component for cyclists riding with the FC-M552 crankset system. Designed for durability and precision, these bolts ensure your chainrings remain securely fastened to the crank arm, providing smooth shifting performance under various riding conditions. While these bolts are specifically engineered for the M552 model, users should note that they are not universally compatible with other crankset series, requiring careful verification before installation.
All features
| Colour | Multicolor |
|---|---|
| Model Part Number | FCM552 |
| Brand | SHIMANO |
Extended Product Information
FAQs
Can I use these bolts on a different Shimano crankset?
No, these bolts are specifically measured for the FC-M552 crankset and may not fit the arm thickness or nut spacing of other models.
Does this set include the nuts that go behind the chainring?
This set includes 4 fixing bolts only. It does not include the corresponding backing nuts.
What tool do I need to tighten these?
You typically need a standard 5mm hex (Allen) key to install these bolts.
Should I use grease on the threads?
Yes, applying a thin layer of bicycle-grade grease is recommended to prevent seizing and ensure consistent torque application.
How many bolts come in the package?
The package contains 4 double gear fixing bolts.
Troubleshooting
Bolt is difficult to thread into the nut
Back the bolt out completely, ensure there is no grit in the threads, and check that the backing nut is seated correctly in the spider.
Bolt continues to loosen after installation
Ensure the bolt is torqued to the manufacturer's specified rating. If it continues to loosen, consider applying a small amount of blue thread-locking compound.
Pros and Cons
Pros
- Genuine OEM quality for maximum reliability
- Precise dimensions ensure optimal chainring alignment
- Includes all necessary bolts for a full replacement
- Durable steel construction resists stripping
Cons
- Specifically limited to FC-M552 models
- Requires specific hex key tools for installation
- Does not include chainring nuts if lost during service
Setup, Compatibility & Care
To install these bolts, ensure your crankset is clean and free of debris. Apply a light coating of anti-seize or high-quality grease to the threads before insertion to prevent oxidation and ensure accurate torque readings.
- Use a standard hex key (usually 5mm) to remove the old bolts.
- Inspect the chainring holes for any deformation.
- Insert the new M8 x 8.5 mm bolts through the chainring and into the backing nuts.
- Tighten in a star pattern to ensure even pressure across the chainring.
Compatibility: This specific bolt kit is designed strictly for the Shimano FC-M552 crankset. Compatibility with other groupsets (such as XT or Deore series) cannot be guaranteed. Care should be taken during cleaning; avoid high-pressure water jets directly at the bolt heads to prevent moisture ingress.