1. Introduction
Thank you for choosing the ROCKBROS Bicycle Bottle Holder. This ultralight aluminum alloy water cage is designed for both mountain (MTB) and road bikes, providing a secure and convenient way to carry your hydration on rides. This manual provides essential information for installation, usage, and maintenance to ensure optimal performance and longevity of your bottle holder.
2. Product Features
- Ultralight Design: Weighing approximately 33g, it adds minimal weight to your bicycle.
- High Strength Aluminium Alloy: Constructed from durable aluminum alloy for reliable performance.
- Durable and Reliable: Engineered for long-lasting use in various cycling conditions.
- Surface Paint Treatment: Features a treated surface for enhanced aesthetics and protection.
- Integral Forming Design: A seamless design for improved strength and appearance.
- Two Styles Available: Choose between Unilateral and Bilateral designs to suit your preference and bike frame.
- Multiple Colors: Available in blue, black, red, silver, and gold.
3. Package Contents
- 1 x ROCKBROS Bicycle Bottle Holder
- 2 x Mounting Screws
Note: Water bottle not included.

Image: Unilateral bottle holder with included screws.
4. Specifications
| Attribute | Value |
|---|---|
| Model Number | 2017-11B |
| Brand Name | ROCKBROS |
| Weight | Approx. 33g (Less than 75g) |
| Material | Aluminium Alloy |
| Measurement | 14 * 7.5 cm |
| Colors Available | Blue, Black, Red, Silver, Gold |
| Styles Available | Unilateral, Bilateral |
| Origin | Mainland China |
| Package Length | 8 cm |
| Package Width | 5 cm |
| Package Height | 5 cm |
| Package Weight | 0.1 kg |

Image: Two available styles - Bilateral and Unilateral.

Image: Unilateral style in various colors.

Image: Bilateral style in various colors.
5. Installation (Setup)
Follow these steps to install your ROCKBROS Bicycle Bottle Holder:
- Locate the pre-drilled screw holes on your bicycle frame, typically on the down tube or seat tube.
- Align the bottle holder with these holes.
- Insert the two provided mounting screws through the bottle holder and into the frame's screw holes.
- Using an appropriate Allen key or screwdriver, tighten the screws securely. Do not overtighten, but ensure the holder is firm and does not wobble.
For a visual guide, please refer to the installation video below:
Video: Demonstrates the installation process of the bottle holder on a bicycle frame.

Image: Installation of the bottle holder.
6. Usage (Operating)
Once installed, using your ROCKBROS Bicycle Bottle Holder is straightforward:
- Inserting a Bottle: Gently slide your water bottle or beverage container into the holder from the top or side, depending on the holder style (unilateral or bilateral). Ensure it clicks or sits firmly in place.
- Removing a Bottle: Pull the bottle upwards or outwards from the holder. The flexible design allows for easy access.
The holder is designed to accommodate various bottle types, including standard water bottles, thermos cups, and cans.

Image: Bottle holder with a water bottle.

Image: Versatility with different bottle types.
7. Maintenance
To keep your bottle holder in excellent condition and ensure safety:
- Regular Tightness Check: Regularly check the tightness of the mounting screws. Vibrations from riding can cause screws to loosen over time, which could lead to the bottle holder or bottle falling off.
- Cleaning: Clean the bottle holder with a damp cloth as needed to remove dirt and grime. Avoid using harsh chemicals that could damage the paint treatment.
8. Troubleshooting
If you encounter any issues with your bottle holder, consider the following:
- Bottle Holder Feels Loose: This is typically due to loose mounting screws. Refer to the 'Maintenance' section and tighten the screws securely.
- Bottle Falls Out: Ensure the bottle holder is securely mounted and the bottle is fully inserted. If the issue persists, check if your bottle's diameter is compatible with the holder's dimensions (14 * 7.5 cm).
9. User Tips
- For optimal bottle retention, ensure your water bottle has a standard diameter that fits snugly within the 14 x 7.5 cm dimensions of the holder.
- If you frequently ride on rough terrain, consider checking the screw tightness more often.
- The choice between 'Unilateral' and 'Bilateral' styles can depend on your bike frame's design and your preferred method of bottle access while riding.
10. Important Safety Information
ATTENTION: Please make sure to check the tightness of the bottle cage regularly to prevent looseness and cause the bottle to fall off. Failure to do so may result in loss of your bottle or potential safety hazards during your ride.
11. Warranty and Support
For any questions, concerns, or support regarding your ROCKBROS Bicycle Bottle Holder, please contact the seller or manufacturer directly. Additional item guides and documents, including a PDF user manual, may be available from the seller.
You can find the PDF user manual here: User manual (PDF)





