Stromer has voluntarily recalled approximately 6,500 “WREN” front forks fitted to its ST3, ST5 and ST7 speed pedelecs. Fewer than 5% of Stromer bikes currently in use are affected.

Specifically, some ST3, ST5 and ST7 models are affected — but only if they are equipped with WREN suspension forks with the serial numbers 403860-XXXXXXX-XXXX or 403523-XXXXXXX-XXXX.

The serial number can be found on a QR code sticker on the inside of the left or right stanchion tube.

If you are unsure whether your Stromer model is affected, please check our dedicated service webpage.

Yes, replacing it with a rigid fork is possible in principle. This is carried out exclusively at the explicit request of the end customer and is not part of the official recall measure. Please contact your Stromer dealer to discuss the available options and the costs for the fork and installation.

The official recall solution remains unchanged and will be implemented free of charge as soon as the relevant repair kits are available.

The suspension fork will be repaired. The affected parts will be replaced with new, more robust components with significantly higher strength. The existing dampers will continue to be used and will be integrated into the new fork kit.

This is a repair measure, not a full replacement. A safety-relevant component will be replaced with a significantly more durable element.

For technical information and to arrange your workshop appointment, your authorised Stromer dealer is your first point of contact. They know your bike best and are directly involved in our repair process.

For general safety-related questions, we have strengthened our support team. You can contact us directly via the dedicated email address: safety@stromerbike.com

Production of the new fork kits is running at full capacity. The first parts arrived with us in mid-February and are currently being distributed to dealers, which means the first repairs can already start now. We are flying components in weekly by air freight in order to accelerate the process as much as possible.

Because the WREN suspension forks used on the ST3, ST5 and ST7 models were developed specifically for Stromer, the model-specific versions require precise logistics. We expect the delivery of repair parts to be fully completed by the end of May.

Your authorised Stromer dealer will inform you directly as soon as the parts for your bike are available. Thank you for your patience during this complex logistics process.

If your vehicle is affected by the recall, you should not ride it for safety reasons until the required repair measures have been carried out by your dealer. myStromer AG will inform customers and dealers as soon as replacement parts are available. Our team is working at full speed to source the parts as quickly as possible.

The first fork kits will arrive at dealers by the end of February, allowing the first repairs to start immediately. We are flying components in weekly by air freight in order to accelerate the process as much as possible.

For safety reasons, the vehicle must not be ridden. However, it can still be pushed or transported to your dealer using an appropriate means of transport. We understand that this may be difficult in some cases and apologize for the inconvenience.

The safety of our riders is our top priority, which is why we issued a safety notice as quickly as possible. This was necessary to avoid compromising rider safety.

Unfortunately, taking rapid action also results in longer waiting times for the required parts, as supply chains were not able to respond to the increased demand as quickly. We understand that this may be challenging in individual cases and we apologize for the inconvenience.

As this is a safety component developed specifically for Stromer, careful production and subsequent quality assurance are essential. To keep waiting times as short as possible, we have decided to ship components by air freight rather than using the usual sea route.

We are working closely with our dealer network to prioritize workshop capacity for the conversion. The first fork kits will arrive at dealers by the end of February, allowing the first repairs to begin immediately. We expect the delivery of repair parts to be fully completed by the end of May.

We understand your request for a temporary replacement bike. However, given the exceptional scale of this recall — affecting approximately 6,500 bikes worldwide — it is unfortunately not possible for Stromer and the dealer network to provide this as a standard measure.

We recognize that this may cause inconvenience and sincerely regret that we cannot offer this option.

We are aware of the impact that the temporary unusability of your vehicle has on your daily mobility. At present, we are not able to offer compensation for the loss of mobility. Our focus is currently on organising the fork repair as quickly as possible.

For vehicles still within the warranty period, the warranty will be extended by the time during which the vehicle could not be used due to the recall.

In addition, we have decided to offer affected customers whose vehicles are no longer within the warranty period a voluntary service credit. In Switzerland this amounts to CHF 150, and in EU markets to EUR 100. This credit can be redeemed for a future service. With this voluntary measure, we would like to underline our responsibility and express our appreciation to customers affected by this situation.

We greatly regret the limitations this situation has caused, especially as we know that the e-bike is a key means of transport in everyday life for many customers.

Stromer does not enter into leasing agreements directly with end customers. Leasing agreements are subject to the respective national contractual terms between the leasing company and the customer. Regardless of this, we are doing everything we can to implement repairs as quickly as possible in order to minimise downtime for affected customers. We are also in contact with partners to enable practical solutions in the interests of our customers.

Yes. For vehicles within the warranty period, the warranty will be extended by the time during which the vehicle could not be used due to the recall. This warranty extension applies to the entire bike, not just the affected component.

Independently of this, Stromer decided in September 2025 to extend the general warranty period from two to three years. This is a clear sign of our long-term commitment to quality.

We have decided to offer affected customers whose vehicles are no longer within the warranty period a voluntary service credit. In Switzerland this amounts to CHF 150, and in EU markets to EUR 100.

This credit can be redeemed for a future service. With this voluntary measure, we would like to underline our responsibility and express our appreciation to customers affected by this situation.