Optiline Tube DuoLock Mount - 17.0-20.5 mm
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Product Information
Full details
The Optiline Tube DuoLock mount is designed for sport bike riders who need a secure, stable, and vibration-resistant way to attach their mobile devices to their bike's steering stem tube. This mount provides the convenience of a patented, modular quick-release system for easy device handling, though users should ensure their bike's steering stem diameter matches the 17.0 mm to 20.5 mm range to ensure a proper fit before purchase.
All features
| Model Part Number | 90458 |
|---|---|
| Brand | Lampa |
Extended Product Information
FAQs
Does this mount fit all bike types?
No, it is specifically designed for sport bike steering stem tubes with diameters between 17.0 mm and 20.5 mm.
Can I use my existing phone case with this?
You must use an Optiline-compatible case or a universal DuoLock adhesive adapter to engage the locking mechanism.
Can I rotate the device while riding?
While it is possible to adjust the angle, we strongly recommend making all adjustments to device orientation while the bike is stationary for safety.
How do I know if my stem tube is the right size?
Measure the inner opening of your steering stem using digital calipers for the most accurate reading.
Is the mount weatherproof?
The materials are designed for outdoor use and exposure to the elements, but regular cleaning is recommended to prevent salt or grime buildup.
Troubleshooting
Device feels loose or vibrates excessively during the ride
Check that the internal expansion bolt is fully tightened against the inner walls of the steering stem.
Difficulty snapping the device into the mount
Clean any grit or debris from the DuoLock locking interface and ensure the case is correctly aligned with the mount slots.
Mount head rotation is too stiff
Loosen the rotation adjustment screw slightly to allow for easier movement; ensure it is re-tightened after setting your desired angle.
Pros and Cons
Pros
- Secure, wobble-free mounting for aggressive riding styles
- Highly versatile with landscape or portrait rotation
- Compatible with a wide array of Optiline ecosystem accessories
- Easy one-handed device locking and unlocking
Cons
- Limited to steering stem tubes between 17.0 mm and 20.5 mm
- Requires Optiline-specific cases or adapters for the DuoLock system
- Permanent installation style requires tools for initial setup
Setup, Compatibility & Care
To install the mount, insert the expansion component into the steering stem tube. Tighten the central screw to expand the base until it grips the inner walls of the stem firmly. Ensure it is centered before final tightening.
Compatibility check: Use a caliper or measuring tape to verify your steering stem internal diameter is between 17.0 mm and 20.5 mm. Using the mount on a tube outside this range will result in a loose fit and potential safety risks.
Care instructions: Periodically check the mounting hardware for signs of wear or loosening due to engine vibration. Wipe the locking head clean of road debris or dust to ensure the DuoLock click-mechanism remains smooth and responsive.