PRO Gap Cap Expander Carbon - 25mm - 1-1/8
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Product Information
Full details
The PRO Gap Cap Expander Carbon is designed for weight-conscious cyclists seeking to optimize their bicycle's cockpit. Its primary benefit is significant weight reduction, contributing to a lighter, more agile ride. A potential caveat is its specialized nature, best suited for carbon steerer tubes and lightweight builds. This expander is PRO's lightest offering, weighing only 24g, and is compatible with all stems while making an excellent addition to any performance-oriented setup.
All features
| Model Part Number | PRHS0118 |
|---|---|
| Brand | PRO |
Extended Product Information
FAQs
What is the main benefit of the PRO Gap Cap Expander Carbon?
The primary benefit is significant weight reduction in your bicycle's cockpit, as it is PRO's lightest expander model at just 24g.
Is this expander compatible with all bikes?
It is compatible with all stems but is specifically designed for carbon steerer tubes and is ideal for lightweight cockpit setups. Ensure your steerer tube is either 1½ or 1 1/8 inch.
How much weight does this expander save?
It weighs only 24g, which is 16g lighter than the previous model.
Can I use this with an aluminum steerer tube?
The expander is designed and optimized for carbon steerer tubes. While it may physically fit, it's recommended to use it only on compatible carbon steerer tubes for optimal performance and safety.
What is the installation process?
Installation involves inserting the expander into the steerer tube and then using your stem and headset top cap to secure it and preload the headset bearings according to standard bicycle assembly procedures.
Does it come with a specific headset top cap?
No, this product is the expander only. You will use your existing or a separately purchased headset top cap and stem for installation.
Where is this expander best utilized?
It is best utilized by weight-conscious cyclists looking to reduce their bike's overall mass for improved performance, particularly in competitive cycling or long-distance riding.
Troubleshooting
Expander does not fit securely
Ensure you are using the correct size expander for your steerer tube (1½ or 1 1/8 inch) and that the steerer tube itself is clean. Re-check stem and headset top cap installation.
Difficulty in adjusting headset preload
Confirm the expander is correctly seated and that the stem bolts are loosened before attempting to set headset preload. Ensure the top cap is not bottoming out on the steerer tube. Consult your stem's manual for specific preload instructions.
Noise or creaking from the headset area
This could indicate improper tensioning or a lack of lubrication. Re-torque the headset and stem bolts, ensuring all contact surfaces are clean. Consider re-applying headset-specific grease if necessary.
Pros and Cons
Pros
- Significantly reduces cockpit weight for improved performance.
- Made from carbon for ultimate lightness.
- Compatible with all stems, offering flexibility.
- Designed for optimal integration with carbon steerer tubes.
- Ideal upgrade for competitive and weight-sensitive cyclists.
Cons
- Primarily benefits weight-conscious riders; less impact for others.
- Requires careful installation to ensure proper fit and safety.
- May be overkill for casual cycling use.
- Specific compatibility focus on carbon steerer tubes.
Setup, Compatibility & Care
Compatibility:
- This expander is designed for 1½ inch and 1 1/8 inch steerer tubes.
- It is specifically compatible with carbon steerer tubes.
- While it fits all stems, it is recommended for lightweight cockpit setups.
Setup:
- Ensure your steerer tube is clean and free of debris.
- Insert the expander into the steerer tube.
- Use the appropriate stem and headset top cap to secure the expander and preload the headset bearings according to your stem manufacturer's instructions.
- Verify that the headset is properly tensioned and that the expander is seated securely.
Care:
- Clean the expander with a soft, damp cloth. Avoid using abrasive cleaners or solvents, which could damage the carbon finish.
- Periodically check that the headset remains properly tensioned and that the expander is still securely in place, especially after rough rides.