Burgtec Shimano Crank Bolt - Silver
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Product Information
Full details
The Burgtec Shimano Crank Bolt is a precision-engineered upgrade designed for mountain bikers and e-bike riders who demand reliability and durability for their Shimano Hollowtech II cranksets. By replacing the fragile, stock plastic preload cap, this component provides a secure and easy-to-adjust solution that keeps your drivetrain dialled and properly tensioned. While it offers superior strength and a premium finish, users must exercise caution with torque settings to ensure they do not overtighten and damage the internal threads of their crank arm.
All features
| Colour | Silver |
|---|---|
| Model Part Number | 9527 |
| Brand | Burgtec |
Extended Product Information
FAQs
Does this replace the standard Shimano plastic cap?
Yes, it is designed as a direct, more durable replacement for the stock plastic preload cap used on Hollowtech II cranksets.
Can I use this on any Shimano crankset?
It is compatible with most Hollowtech II designs, including XTR, XT, SLX, LX, Deore, Saint, Zee, and Shimano e-bike motors.
What is the recommended torque for this bolt?
You should only tighten this bolt to between 0.7Nm and 1.5Nm. It only needs to be snug enough to remove play from the bearings.
Do I need a special tool to install it?
No, it uses a standard 8mm hex key, making it much easier to work with than the specific plastic tool required for original caps.
Will this bolt corrode over time?
The bolt features an anodized finish specifically designed to provide high levels of corrosion resistance.
Can over-tightening this bolt damage my bike?
Yes. Overtightening can crush the bottom bracket bearings or strip the internal threads of the crank arm, so always use a torque wrench.
Troubleshooting
Bolt feels stiff while threading in
Back the bolt out immediately and check the threads on the crank arm for debris or cross-threading. Clean threads and re-apply a small amount of grease.
Cranks still have lateral play after tightening
Ensure the crank arms are fully seated on the spindle before tightening the preload bolt. If play persists, check if the bottom bracket spacers are correctly configured.
Bolt is difficult to remove
Use a proper 8mm hex key with a long handle for better leverage. If the bolt was installed without grease, a light penetrating oil may help loosen it.
Pros and Cons
Pros
- Significantly more durable than the standard plastic preload cap
- Precise CNC machining ensures a perfect fit
- Enhanced aesthetic with a high-quality silver finish
- Prevents stripping commonly associated with plastic tools
- Easy to install with standard hex keys
Cons
- Requires precise low-torque application (0.7-1.5Nm)
- Higher initial cost than stock plastic replacements
- Risk of thread damage if cross-threaded during installation
Setup, Compatibility & Care
To install the Burgtec Shimano Crank Bolt, first ensure the crank arm is fully seated on the splines. Thread the bolt in by hand initially to prevent cross-threading. Once engaged, use a torque wrench to tighten to the recommended specification of 0.7 to 1.5Nm. Do not overtighten, as this serves only to set the preload, not to secure the crank arm to the axle; that is the job of the crank pinch bolts. Regularly check the bolt during your routine maintenance intervals to ensure it remains seated. If you wash your bike frequently, ensure the area around the bolt is cleaned and lightly greased to prevent moisture buildup.