1. Introduction
The NEWBOLER Aeropack integrated shelf tail bag is designed to provide a stable and secure storage solution for your bicycle, eliminating the common issues of swaying and sagging found in traditional tail bags. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and longevity of your product.
2. Key Features
- Integrated Shelf Design: Features a unique triangular truss structure for superior stability, eliminating wobble and rattling even on rough terrain. Crafted from aluminum alloy, it integrates directly onto the frame's quick-release axle via a fast-release system. Compatible with standard axles, quick-release axles, thru-axles, and full-suspension mountain bikes.
- Password Lock: An integrated password lock design (initial password 000) effectively reduces the risk of theft when parked in public places, ensuring the safety of your belongings.
- Mudguard Function: This dual-purpose storage and mudguard features an elongated and curved design that effectively blocks splashing mud and water from the rear wheels, protecting your back and backpack.
- Wide Compatibility: Compatible with mountain bikes, gravel bikes, road bikes, and e-bikes. It requires no conventional rack mounting holes, making it suitable for almost all vehicle models, including carbon fiber frames.
- High Load Capacity: Capable of carrying up to 50 kg, sufficient for all supplies and equipment needed for long journeys.
- Large Capacity & Waterproof: Offers a 20L capacity and is made of PVC material, ensuring 100% waterproof functionality to keep your items dry.
- Adjustable Bracket: The bracket is adjustable according to bicycle size, ranging from 120-157mm, covering approximately 85% of vehicle models.
- Silicone Gasket Design: Silicone pads at the bottom of the bracket effectively protect the bicycle's paint and prevent scratches during installation and use.
- Tail Light Holes: The tail of the bag is designed with integrated holes for attaching a tail light, enhancing safety during nighttime cycling.
3. Specifications
| Attribute | Detail |
|---|---|
| Product Type | Integrated Shelf Tail Package |
| Bag Material | PVC |
| Bracket Material | Aluminum Alloy |
| Capacity | 20L |
| Load Capacity | ≤50kg |
| Net Weight | ≈1.15kg |
| Bag Folded Height | ≈22cm / 8.66in |
| Bag Fully Unfolded Height | 41.5cm / 16.14in |
| Bracket Height | 27.5cm / 10.88in |
| Bracket Width | 15.3cm / 6.02in |
| Bracket Base Width | 7cm / 2.76in |
| Adjustable Bracket Range | 120-157mm |
| Function | Rainproof |
| Compatibility | Gravel bikes, road bikes, mountain bikes, and e-bikes (Note: Only bikes without rear seat brackets can be installed and used) |
4. Package Contents
Please verify that all items are included in your package:
- Shelf tail package * 1
- Bicycle rear rack * 1
- Stainless steel screw connection/adjustment joint * 1
- Aluminum alloy seat tube clamp * 1
- Shelf support (accessory) * 1
- Nut wrench * 1
- Screw gasket * 3
- Long screws * 2
- Short screw * 1
- Fixed strap * 4
- Long strip gasket * 1
- Black Screw gasket * 4

5. Installation
Watch the official product video for a visual guide on installation and features:
5.1. Front Bracket Installation (Seat Tube Attachment)
- Take the elongated spacer and secure it around the seat tube. This spacer prevents scratching the frame tube during installation.
- Align the front and back parts of the bracket with the seat tube.
- Insert the long screw and tighten it with a wrench to secure it.
- The rear screws should be tightened and fixed in the same way as in Step 3 to ensure the stability of the bracket.
- Align and connect the small brackets on the bag with the fixed brackets, insert the screws and tighten them.
- Tighten the screws inside the bracket using a small spanner. Shake to ensure there is no looseness, and the installation is complete.

5.2. Below Bracket Installation (Main Rack to Rear Fork)
- Align the bracket with the rear lower fork of the bicycle, adjusting to the required spacing.
- Should the bracket deviate from the rear fork position, gently bend or apply pressure to the bracket for fine adjustment until properly aligned.
- First, fit the securing strap to one side of the bracket and tighten the screws to secure it. (Note: Do not secure holes in the same direction simultaneously).
- Then align the large bracket (used to secure the rear lower fork) with the two screw holes on the rear of the bag.
- Insert two screws in the same manner and tighten them thoroughly with a spanner to ensure the bracket is securely fastened.
- Installation complete.
- Then place the fixing strap on the other side and fix it with screws (first fix one fixing strap on each side, do not fix two on the same side).
- On the other side, follow the same steps and tighten the screws of the fixing band.
- Tighten the screws of the four-sided fixing straps.
- Adjust the rear seat lever back to the required position.
- The installation is complete when the middle screws are fixed and not shaken.
- Installation is complete.


5.3. Bag Installation (Attaching Bag to Rack)
- First, take out the bottom plate inside the bag.
- Then accurately confirm the locations of the four screw holes at the bottom of the bag.
- Remove the small bracket (used to secure the seat tube) and align it with the two screw holes on the front of the bag.
- Insert two screws and tighten them.
- Then align the large bracket (used to secure the rear lower fork) with the two screw holes on the rear of the bag.
- Insert the second screw in the same manner and use a wrench to tighten it completely, ensuring the bracket is secure.

6. Operating Instructions
6.1. Using the Bag
- Place your items inside the bag.
- Smooth the bag opening and fold it down to the desired position to ensure a waterproof seal.
- Fasten the password lock buckles on both sides of the bag into their correct positions.
6.2. Setting the Combination Lock
- The initial password for the encryption lock is '000'.
- To set a new password, hold the back of the combination lock with a small screw wrench and do not let go.
- While holding the wrench, rotate the password dials to your desired new combination.
- Release the screw wrench. Your new password is now set.
- Finally, ensure the clips of the left and right straps are securely in place.

7. Maintenance
- Cleaning: Wipe the PVC bag with a damp cloth and mild soap. Avoid using harsh chemicals or abrasive cleaners.
- Bracket Care: Periodically inspect the aluminum alloy bracket for any signs of wear, damage, or corrosion. Clean any dirt or debris from moving parts and screw threads.
- Fasteners: Before each ride, ensure all screws, bolts, and straps are securely tightened. Loose fasteners can lead to instability or loss of the bag.
- Storage: When not in use, store the bag and rack in a cool, dry place away from direct sunlight to prevent material degradation.
8. Troubleshooting
- Bag Swaying/Instability:
- Ensure all bracket screws are tightened securely.
- Verify the bracket is correctly aligned with the bicycle's rear fork.
- Check that the bag is properly attached to the rack with all straps fastened.
- Distribute weight evenly within the bag.
- Straps Interfering with Wheel:
- Ensure all straps are securely fastened and not dangling.
- Trim excess strap length if necessary to prevent contact with the wheel.
- Rack Not Centered:
- Carefully re-adjust the bracket's position on the rear fork.
- If minor adjustments are needed, shims (e.g., pieces of old tire tube) can be used to fine-tune the centering.
- Missing Parts:
- Upon receiving the product, carefully check all package contents against the provided list. Contact customer support immediately if any bolts, screws, or the closure lock are missing.
9. User Tips
- Dropper Post Compatibility: This rack system is ideal for bikes with dropper posts as it mounts independently of the seatpost, allowing full dropper functionality without interference.
- Accessory Mounting: The integrated bolts on the rack can be utilized with extensions (e.g., aluminum GoPro-style extensions) to securely mount additional accessories like radar units or other gear.
- Versatile Mounting: This system provides a great alternative for bicycles that lack traditional rack mounting points, offering a stable solution where others might not fit.
- Enhanced Stability: Users consistently report excellent stability with no side-to-side swaying, even when riding on rough or challenging terrain.
10. Frequently Asked Questions (FAQ)
- Q: Is this luggage rack suitable for a dual-suspension bicycle?
- A: Yes, the NEWBOLER Aeropack rack is designed to be compatible with full-suspension mountain bikes, as well as gravel, road, and e-bikes.
- Q: Is there a thru-axle mount available for the rack? Or pannier rack mounts?
- A: The mount system is compatible with standard axles, quick-release axles, and thru-axles. The design is an integrated shelf tail package, which differs from traditional pannier rack mounts.
- Q: Is it possible to buy just the bag?
- A: The product is sold as an "integrated shelf tail package," which includes both the bag and the rack system. Individual components may not be available separately.
11. Warranty & Support
For detailed warranty information, technical support, or to report missing parts, please refer to the official user manual PDF available at: User Manual (PDF) or contact NEWBOLER customer service directly.