Safety notice: No. Child seats are strictly prohibited on our bike racks.
While our rack is rated for a maximum weight capacity of up to 45 kg, it is designed solely for cargo and is not approved for transporting people.
The use of a child seat is not allowed for the following reasons:
- The mounting kit provided by tubus is approved for a maximum load of 26 kg.
- We cannot guarantee the long-term durability or stability of your bicycle frame or its threaded eyelets under the dynamic loads of a riding child.
- Only certain bicycle manufacturers explicitly approve their frames for child seats, as these have been tested accordingly.
For the safety of your child, please only use child seats that are mounted on frames or attachment systems that are explicitly approved by the manufacturer of your bicycle.
Included in the delivery are:
various spacers,
screws, washers & lock nuts in different lengths.
This allows you to ensure that the screws are long enough for a secure attachment but do not rub against the tire.
For maximum safety and durability, the included adapters, spacers, and self-locking nuts must be used.
If you do not attach the rack over your fender, you can mount it directly to the seat stays of your bike frame using the mounting kit.
The mounting kit has been extensively tested, is particularly robust, and is designed for lasting stability. A clear step-by-step guide is also included. The mounting stays have a maximum length of 350 mm.
However, note that the geometry of your frame is crucial: the further the rack is mounted away from the seat stays (the further the mounting stays need to be extended), the lower the overall stability will be.
For the best possible stability, the distance between the rack and the seat stays should be as small as possible.
Check before each ride that all screws are tightened and regularly inspect both the frame attachments and the rack.
Our extension adapters increase the compatibility of the rack with various bike frames and wheel sizes. You will need an adapter if your lower attachment point is very low (near the axle height) or if you are riding particularly large & wide tires.
Below you will find the suitable solution for your wheel size:
28-inch wheels: If your lower mounting point is very low (close to the axle height), you need the
Extension 5 adapter.
29-inch wheels (with 3-inch tires): With a low mounting point (close to the axle height) you need the Extension 7 adapter. If the mounting point is higher, the Extension 5 adapter is sufficient.
Fatbike: For fatbikes with large wheels or rear tires starting from 4 inches, you need – depending on the frame clearance – either the Extension 5 or the Extension 7 adapter.
32-inch wheels: With a low mounting point you need the Extension 7 adapter. If the mounting point is higher, the Extension 5 adapter. However, for particularly wide tires (3 inches), the Extension 7 or even the Extension 9 adapter may be required.
36-inch wheels: With a low mounting point you need the Extension 9 adapter. If the mounting point is higher, the Extension 7 adapter.
Our luggage carrier is designed to be compatible with modern bicycle standards without additional adjustments – including 142 mm and 148 mm Boost thru-axles, as used on most current bicycles and e-bikes.
However, if you ride an older or classic bicycle with a narrower rear width (typically 150–160 mm), the luggage carrier may be too wide. For this, there is the No-boost Adapter.
You need the No-boost Adapter, if the installation width of your rear end (dropouts) is below the modern Boost standard – especially with a frame width under 170 mm.
The NoBoost Adapter is made of an aluminum alloy and comes with two safety screws. It is first mounted on the luggage carrier, increasing its stability and then allows for a secure and torsion-resistant attachment to the bicycle frame.
Yes. The luggage carrier can be used in the rain without any issues.
Thanks to its stainless steel construction, it is extremely corrosion-resistant and does not rust under normal weather conditions.
However, we recommend avoiding prolonged contact with saltwater, sea air, or salty rain. Continuous exposure to salt can attack the protective passive layer of the stainless steel and cause slight surface rust over time.
If the luggage carrier comes into contact with road salt, it is sufficient to rinse it with clear water and then dry it.
Yes! Sustainability was a central part of our material selection.
Because stainless steel does not break down or easily rust under normal conditions, the rack has an incredibly long service life. The most sustainable product is one you only have to buy once.
Our luggage carrier follows a completely different concept: It transforms your existing bicycle into a powerful cargo bike.
Instead of spending several thousand euros on a large cargo e-bike, our luggage carrier expands your existing bicycle with a high transport capacity.
It offers a simple and extremely flexible platform that can be individually adapted to your daily transport needs.
However, please note that you should always load your bicycle according to your own abilities.
In our user manual, you will find information on various loading situations and their safe handling.
Always adjust the load to your physical strength, riding skills, and riding style to ensure your own safety and that of other road users at all times.