1. Product Overview
The ROCKBROS Quick Release Rear Bike Rack (Model HJ1007/6) is designed to provide a sturdy and reliable cargo solution for your bicycle. Constructed from high-strength aluminum alloy, it offers a balance of durability and lightweight performance, suitable for daily commuting and long-distance cycling. This rack features a quick-release mechanism for easy installation and removal, adjustable support rods for compatibility with various bike frames, and integrated side protection bars to secure your cargo.
Figure 1: The ROCKBROS Rear Bike Rack installed on a mountain bike, viewed from the rear-left side.
2. Package Contents
Before installation, ensure all components are present:
- Main Rack Body with Quick Release Clamp
- Adjustable Support Rods (2)
- "W" Shape Side Bars (2)
- Red Rear Reflector
- Elastic Cords
- Installation Tools (Allen keys, small wrench)
- Various Screws, Nuts, and Spacers
Figure 2: All components of the ROCKBROS Rear Bike Rack laid out for inspection, including the main rack, support bars, reflector, and tools.
3. Setup and Installation
Follow these steps to correctly install the bike rack. It is recommended to keep all screws slightly loose until the final adjustment to ensure proper fit.
3.1. Attach Main Rack to Seat Post
- Place the quick-release clamp of the main rack body onto your bicycle's seat post. Ensure the included rubber spacers are used to protect the seat post and provide a secure fit.
- Tighten the quick-release lever to secure the main rack to the seat post. Do not overtighten at this stage.
Video 1: Official ROCKBROS installation guide demonstrating the attachment of the main rack to the seat post.
Figure 3: Close-up view of the quick release clamp securing the main rack to the bicycle's seat post, showing the use of protective spacers.
3.2. Adjust Rack Position
- Loosen the screws on the underside of the main rack that connect to the sliding rail.
- Adjust the rack's length to achieve the desired position over the rear wheel, ensuring adequate clearance.
- Once positioned, lightly tighten these screws.
Figure 4: The adjustable structure of the bike rack, illustrating how the length can be extended or retracted to fit different bicycle sizes.
3.3. Install Support Rods
- Attach the two adjustable support rods from the main rack to the rear frame of your bicycle. Use the provided screws and small rubber seals to secure them.
- Adjust the length of the support rods to ensure the rack is level and stable.
- Lightly tighten the screws on the support rods.
Video 2: Official ROCKBROS video demonstrating the installation and adjustment of the support rods to the bicycle frame.
3.4. Install "W" Shape Side Bars
- Attach the two "W" shape side bars to the main rack, securing them with the provided screws. These bars help protect your luggage from the wheel spokes.
- Lightly tighten the screws.
3.5. Install Rear Reflector
- Attach the red rear reflector to the designated slot at the back of the main rack. This enhances visibility for nighttime cycling.
Figure 5: Detail of the red rear reflector installed on the bike rack, highlighting its placement for increased visibility.
3.6. Final Tightening
- Once all components are in place and adjusted, fully tighten all screws using the provided tools. Ensure the rack is stable and does not wobble.
4. Operating Instructions
The ROCKBROS Rear Bike Rack is designed for carrying various items, enhancing your cycling experience.
- Load Capacity: The rack has a maximum load-bearing capacity of 55 lbs (approximately 25 kg). Do not exceed this limit to ensure safety and prevent damage to the rack or your bicycle.
- Cargo Securing: Use the included elastic cords or other appropriate straps to securely fasten your luggage, bags, or other items to the rack. Ensure items are balanced and do not obstruct your view or interfere with bike operation.
- Side Protection: The "W" shape side bars are designed to prevent panniers or other side-mounted bags from rubbing against the rear wheel spokes.
- Visibility: The integrated red rear reflector provides additional visibility to other road users, especially in low-light conditions.
Figure 6: Examples of the bike rack in use, demonstrating its versatility for carrying different types of cargo such as bike panniers and trunk bags.
5. Maintenance
To ensure the longevity and safe operation of your ROCKBROS Rear Bike Rack, follow these maintenance guidelines:
- Regular Inspection: Periodically check all screws, bolts, and quick-release mechanisms for tightness. Tighten any loose fasteners to prevent rattling or instability.
- Cleaning: Clean the rack with a damp cloth and mild soap. Avoid harsh chemicals that may damage the finish.
- Corrosion Prevention: The aluminum alloy construction is resistant to rust, but it is advisable to wipe down the rack after riding in wet conditions to prevent water spots or potential corrosion of steel components (screws).
- Storage: If removing the rack for storage, keep all components together in a dry place.
6. Troubleshooting and Compatibility
This rack is designed for broad compatibility but has specific limitations:
- Compatibility: Mainly suitable for most mountain bikes. Fits round seat tube diameters under 3.2 cm (1.26 inches).
- Incompatibility: This rack is NOT suitable for:
- Soft-tailed bikes (full suspension bikes)
- Carbon fiber bikes
- Foldable bikes
- Small wheel bicycles
- Rear suspension bikes
- Bikes with non-round or oversized seat posts
- Loose Rack: If the rack feels loose after installation, re-check all connection points, especially the quick-release clamp on the seat post and the screws on the support rods. Ensure all spacers are correctly placed.
- Pannier Interference: If panniers touch the wheel, ensure the "W" shape side bars are correctly installed and consider using smaller panniers or adjusting their position.
Figure 7: Visual guide illustrating bike types that are compatible and incompatible with the ROCKBROS Rear Bike Rack, including seat stay and seat post diameter recommendations.
7. Specifications
| Brand | ROCKBROS |
| Model Name | All black rack |
| Part Number | HJ1007/6 |
| Material | Aluminum Alloy |
| Color | Black |
| Item Weight | 1.43 Kilograms |
| Load Capacity | 55 Pounds (approx. 25 kg) |
| Mounting Type | Rear Seat Mount |
| Orientation | Rear |
| Included Components | Rack, Screws, Tools, Elastic Cords, Rear Reflector |
8. Warranty and Support
The ROCKBROS Rear Bike Rack comes with a 1-Year Warranty from the date of purchase.
For warranty claims, technical support, or any inquiries regarding your product, please contact ROCKBROS customer service through the retailer where the product was purchased or visit the official ROCKBROS website.
For more information, visit the ROCKBROS Store on Amazon.
