Nitto Handlebar Shim - 25.4-26.0
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Product Information
Full details
The Nitto Handlebar Shim is an essential component for vintage bicycle enthusiasts and custom builders looking to pair 25.4mm handlebars with 26.0mm stems. It offers a secure, high-quality interface that prevents slippage and protects delicate handlebar finishes, though it requires careful installation to ensure perfectly centered alignment.
All features
| Model Part Number | 4582350850536 |
|---|---|
| Brand | Nitto |
Extended Product Information
FAQs
Can I use this shim for handlebars other than 25.4mm?
No, this shim is precision-engineered specifically for 25.4mm handlebars fitting into 26.0mm stems.
Will this shim damage my handlebars?
No, the Nitto shim is designed to prevent scoring and protect the finish of your handlebars.
Is this compatible with carbon fiber handlebars?
Generally, it is recommended to use parts specifically designed for carbon, though it fits the physical dimensions, you should verify with the handlebar manufacturer.
Does this shim require grease?
It is best to keep the mating surfaces clean and dry to ensure maximum friction and prevent slippage.
Can I reuse this shim if I change stems?
Yes, as long as the shim is not deformed or damaged, it can be reused when switching components of the same diameters.
Troubleshooting
Handlebars feel loose after tightening.
Verify that the stem clamp bolts are torqued correctly and that the shim has not shifted out of the center position during installation.
Shim keeps sliding during installation.
Apply a very small amount of friction paste to the exterior of the shim to hold it in place while positioning the handlebar in the stem.
Pros and Cons
Pros
- Protects handlebar surface from clamping marks
- High-quality stainless steel ensures longevity
- Provides a secure, slip-free fit
- Essential for using classic Nitto components
- Easy to install with basic tools
Cons
- Adds a minor step to the installation process
- Must be perfectly centered for balanced tension
- Only fits specific 25.4mm to 26.0mm conversions
Setup, Compatibility & Care
To install, first ensure both the stem clamp and handlebar are free of grease or debris. Slide the shim over the center of the handlebar, ensuring it is perfectly positioned where the stem clamp will make contact. Insert the handlebar into the stem, center it, and tighten the stem bolts in an even, alternating pattern to ensure uniform pressure. Avoid over-tightening; standard torque specifications for your stem should be followed. For maintenance, periodically check the shim for signs of movement and ensure the stem bolts remain properly torqued after the initial "break-in" period.
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