FAQ: frequently asked questions

All our products are Made in Germany – from development and production to assembly. Around 60% of the components are manufactured in-house, while the rest comes from regional suppliers that meet the same high-quality standards as we do at H+B Hightech GmbH. Only a few components are sourced elsewhere in Europe. By relying on regional Industry 4.0-level suppliers, we ensure quality, sustainability, and short supply chains.

The 3X3 gear hubs are a fully sealed system, protected against environmental influences such as dirt, water, and dust. This design makes them virtually maintenance-free and highly resistant to wear. They are engineered for a service life of many thousands of kilometers.

The gear ratios are optimally spaced, ensuring smooth riding characteristics and fast, precise shifting performance. In addition, the hubs are designed to handle input torques of up to 250 Nm, making them ideally suited for powerful e-bike motors and heavily loaded cargo bikes.

Unlike oil-lubricated gear hubs, 3X3 gear hubs use a permanent grease lubrication system. As a result, regular oil changes are not required, significantly reducing maintenance effort over the lifetime of the hub.

VPL Vapor Propulsion Labs is the contact for the American region. Contact VPL here.

Retrofitting the 3X3 hub gear is possible under certain conditions. This requires consultation and inspection by a 3X3-certified dealer. Please note:

• Retrofitting with the mechanical shifting system is straightforward.

• The dealer will first check whether the frame is suitable for retrofitting.

• A 3X3 hub gear offers different options for torque support. The dealer will select the appropriate solution for the specific bike.

• Retrofitting the E-Shift is only possible in combination with the BOSCH Smart System and requires prior coordination and approval by the bicycle manufacturer.

Our products are designed for a very long service life and maximum durability. Our suppliers meet the same high-quality standards that we apply ourselves at H+B Hightech GmbH. We also prioritize short supply chains, preferably working with regional suppliers. Our own production is designed to be as sustainable as possible, for example through one of the largest solar panel installations in the Stuttgart area, covering 10,000 m², as well as heat recovery from our machining processes.

On our website you can find a list of all dealers and distributors under: https://www.3×3.bike/en/dealer/

The noise in the freewheel is completely normal. Inside the hub, several clutches work together, but in freewheel mode mainly one of them takes over the function.

Due to the interaction of forces, a second clutch may briefly make contact.

This is technically intended and can sound slightly different depending on speed and gear.

The overall sound results from the freewheel principle. Just like with a ratchet freewheel (e.g. DT Swiss), springs press the toothed discs together while pedaling. In freewheel mode, the discs (clutches) slide over each other, creating the characteristic clicking sound.

Yes, this is one of the key advantages of an internal gear hub compared to a derailleur system. A 3X3 gear hub can be shifted while stationary and even across multiple gears at once.

When combined with the E-Shift system, the hub also offers an Auto-Downshift function. When you come to a stop – for example at a traffic light or intersection – the hub automatically shifts back to a user-defined start gear. This makes pulling away again much easier and more comfortable.

Yes, shifting several gears at once or even shifting while standing still are no problem with a 3X3 hub.

For those who demand more from their drivetrain – and when maximum performance matters

• Cargo bikes carrying heavy loads
• High-performance e-bikes
• Challenging terrain and steep climbs
• Intensive daily use

The 3X3 NINE was developed for applications where reliability, durability, and efficiency are essential. Thanks to its compatibility with virtually all common thru-axle and quick-release systems, it can be integrated into a wide range of bicycle platforms.

With a gear range of 554%, an input torque rating of 250 Nm, and outstanding efficiency, the NINE delivers uncompromising performance – whether on a cargo bike, trekking bike, S-pedelec, or mountain bike.

Its maintenance-free design and exceptional durability make the NINE the ideal choice for high-mileage riders, commuters, and professional fleets that depend on maximum uptime and riding enjoyment every day.

A 3X3 gear hub is approved exclusively for installation in the rear wheel. Other installation types must be reviewed and approved in advance by H+B Hightech GmbH. Use is permitted for bicycles that, in accordance with §1 paragraph 3 StVG, are not classified as motor vehicles and that comply with generally applicable safety standards.

For the 3X3 NINE gear hub the total gear range is 554,35%.

For the 3X3 SIX gear hub the total gear range is 292%.

An automatic function is not available at this time.

Due to the shifting logic with two cables, this is currently not technically or economically feasible and is therefore not planned in the near future.

The 3X3 SIX gear hub is for everyone rethinking everyday mobility:

• Commuters & city riders
• E-bikes in urban environments
• Moderate riding profiles
• Focus on simplicity & reliability
• When the essentials matter most.

With the introduction of the 3X3 SIX, 3X3 will now offer two clearly defined gearbox platforms within the same system architecture.

The 3X3 NINE represents maximum performance under the most demanding conditions—engineered for heavy-duty applications, cargo bikes, high loads, and the toughest terrain.

The new 3X3 SIX, on the other hand, is designed for urban e-bikes, commuters, and modern city mobility. Its focus is on everyday practicality and delivering exactly the performance range that many riders actually need in their daily use.

The 3X3 SIX gearbox is built for those who rethink everyday mobility:

– Commuters and urban riders
– E-bikes in city environments
– Moderate riding profiles and terrain
– A focus on simplicity and reliability

When what matters most is all you need.

The demands of modern mobility have changed. E-bikes, cargo bikes, and commuter solutions place new requirements on components:

– Higher loads
– More powerful motors
– Daily use
– Less time for maintenance

What remains unchanged is the expectation of reliability.

The result: technology needs to deliver more—
while demanding less.

3X3 develops shifting technologies designed precisely for this purpose:
less maintenance, more performance, and maximum reliability.

Yes. The 3X3 gear hub is compatible with Bosch eBike systems and is available with both a mechanical shifter and the electronic 3X3 E-Shift.

The 3X3 E-Shift integrates seamlessly into the Bosch ecosystem. This allows you to benefit from features such as shifting under load, shifting while stationary, and Auto Downshift, which automatically shifts back to a predefined start gear whenever you come to a stop.

With its high maximum input torque, the 3X3 gear hub is perfectly suited for powerful Bosch drive units, making it an ideal choice for e-bikes, cargo bikes, and demanding everyday riding.

The Auto Downshift function of the electronic 3X3 gear hub automatically shifts your bike into a predefined start gear as you slow down or come to a stop. This means that after every stop – whether at a traffic light, an intersection, or in urban traffic – you’re already in the right gear for a smooth and effortless start.

Especially on e-bikes, cargo bikes, and bikes used for everyday riding, Auto Downshift significantly improves riding comfort. You no longer have to remember to shift into an easier gear before stopping and can instead focus entirely on the road ahead.

The preferred start gear can be individually configured using the 3X3 Service Tool, allowing you to tailor the system to your personal riding style and preferences.

With a 3X3 gear hub, you can shift gears at any time – even when your bike is completely stationary. Unlike a conventional derailleur system, the rear wheel does not need to be moving in order to change gears.

This is especially useful if you have to stop at a traffic light, an intersection, or on a hill. You can simply select the right gear while standing still and pull away smoothly, without having to shift under heavy load.

When combined with the electronic shifting system, the 3X3 gear hub also offers the Auto Downshift function. As you slow down or come to a stop, the system automatically shifts back to a predefined start gear, so you’re always ready to set off in the right gear—without having to think about it.

Whether you’re riding in the city, on a cargo bike, or on an e-bike, shifting while stationary makes every ride more comfortable, more intuitive, and more confident.

A 3X3 gear hub is protected against moisture ingress according to the latest standards. However, you should not clean the bicycle with a high-pressure washer. Aggressive cleaning agents can also damage the hub. Use qualified bicycle cleaners and follow the application instructions provided. Pay special attention to the disc brake: contamination, including cleaning agents, can significantly impair braking performance.

For end customers: Complaints are handled through the retailer. Please contact the dealer from whom you purchased the product.

For retailers: In the event of a warranty claim, please use the complaint form at the following link to report the case: https://www.3×3.bike/warranty/

No, opening or attempting to repair the hub yourself is not permitted, as this will void the warranty.

Please contact an authorized and trained 3X3 dealer for inspection and service.

The statutory warranty in Germany is 2 years.

A 3X3 gear hub is protected against dirt and water by a sophisticated sealing system and, thanks to its permanent grease lubrication, does not require regular oil changes.

Nevertheless, the gearbox and drivetrain should be cleaned regularly. The required maintenance intervals depend on riding conditions, usage frequency, and weather exposure.

In addition, all bolts (except the gearbox housing screws) and the shift cables should be checked periodically.

We also recommend having your bicycle serviced by a qualified dealer once a year. During this service, all safety-related components, such as the frame, brakes, and drivetrain, can be inspected for wear and proper function.

A small amount of play in the twist shifter is necessary to ensure proper operation. If the play becomes excessive, it can be reduced by evenly adjusting both barrel adjusters.

• If shifting into a lower gear is delayed, adjust the shift cable using the upper barrel adjuster (1).
• If shifting into a higher gear is delayed, adjust the shift cable using the lower barrel adjuster (2).

Make adjustments in small increments and check the shifting performance after each adjustment.

The 3X3 gear hub itself is designed for maximum durability and low wear. Due to its sealed construction and permanent grease lubrication, there are no user-serviceable internal wear parts that require regular replacement.

The components subject to normal wear are primarily the external drivetrain parts, such as:

• Chain or belt
• Sprocket
• Chainring
• Shift cables and cable housing

These components should be inspected regularly and replaced when worn, in accordance with the manufacturer’s recommendations.

To ensure reliable operation and maximum service life, we also recommend periodically checking all mounting hardware and having the bicycle inspected by a qualified dealer as part of routine maintenance.

Currently, brake discs from the manufacturers Fahrwerker, Magura, and Tektro are available.

Please contact your dealer: https://www.3×3.bike/en/dealer/

Check the following points:

1. Is the distance between the frame and the nut at least 2 mm?
2. Was the nut tightened with 40 Nm torque?
3. Is the seal carrier properly seated in the cover behind the sprocket

In the gear shifts from 3 → 4 and 6 → 7, a change of planetary stages takes place. Because additional parts are moved in the process, the shifting force is slightly higher. This is normal and does not represent a fault.

Yes, there is a spoke adapter. It is available for 135 mm quick release as well as 142 / 148 mm thru-axle.
With the adapter, you can lace and true the wheel without first having to install the shifting mechanism, the actuator, or the axle plate. In addition, the gear hub can be held in place when replacing the adapter.
CAUTION: The spoke adapter must not be used to loosen or tighten the sprocket.

If abnormal freewheel noises occur, proceed as follows:

1. First perform a calibration ride (see the Auto Calibration tutorial).

2. Check whether the M38 nut is tightened to 40 Nm and the chain sprocket is securely mounted on the drive.

3. If there is no improvement, submit a warranty claim including the purchase invoice, the serial number on the housing, and a detailed error description. Use our complaint form on the website at the following link: https://www.3×3.bike/en/warranty/

The 3X3 trigger is equipped with a CR2032 button cell. Depending on the frequency of shifting and connection with the service tool, the battery life is approximately 0.5–1 year. When the battery voltage drops, the trigger signals this by illuminating the LED with every shift and displaying a warning message on the BOSCH display. Replace the battery promptly to ensure proper functioning of the 3X3 E-Shift. Repairing of the trigger and actuator is not required.

If the trigger is no longer operational, you can still shift gears manually using the 3X3 Service Tool.

Detailed instructions on how to perform manual shifting can be found in our video tutorials and in the 3X3 User Manual.

The service tool can be accessed via the URL service.3X3.bike. The requirements are as follows:

1. A Bluetooth-enabled device (iOS systems are not supported on mobile devices)

2. Internet connection (once the service tool has been loaded, it also works offline, but the latest software will not be searched for automatically)

3. Google Chrome or Microsoft Edge internet browser

4. A switched-on and functional e-bike with activated HPP and the correct Bosch E-Shift software.

If your 3X3 NINE is still within the 2-year warranty period, please contact an authorized 3X3 service partner.

The dealer will inspect the hub to determine whether the issue is caused by an internal gearbox defect. If necessary, the gearbox can be replaced and processed as a warranty claim.

You can find your nearest authorized 3X3 service partner here:

https://www.3×3.bike/haendler/

Yes, firmware updates for both the actuator and trigger can be performed by any end user.

To carry out the update, you will need a Windows PC and an active Bluetooth connection to the system. The update process is completed conveniently through our web-based Service Tool.

You can access the Service Tool here:

https://service.3×3.bike

For this, the latest software must be installed on the actuator using the service tool. Afterwards, the new triggers must be enabled for the actuator.

You can either contact our technical support directly by phone at +49 7963 841 82 185 or by email at service@3×3.bike.

Alternatively, you can take your bicycle to your local dealer. Diagnosing and resolving this issue requires remote access to the actuator via TeamViewer, which is typically carried out by an authorized dealer.

Software updates for the 3X3 electronic shifting system are performed using our Service Tool.

You can access the Service Tool here:

https://service.3×3.bike

The tool guides you through the update process and allows you to install the latest firmware for your 3X3 E-Shift components.

If the trigger loses its connection to the actuator, first unpair the trigger using the 3X3 Service Tool and then pair it again with the actuator.

If the issue persists, please contact our technical support team or take your bicycle to an authorized dealer for further diagnosis and troubleshooting.

End Customer:
Please contact the dealer from whom you purchased your bicycle. They will handle the further warranty and service process on your behalf.

Dealer:
Please submit a warranty claim through the Service Case section on our website. You can access the claim form directly via the following link:

https://www.3×3.bike/reklamation