The Streetlegal Module

StVO Modules for Bafang BBS – hardware for a clearly defined pedelec configuration

If you’re planning a Bafang BBS conversion, it’s not only about “it works” — it’s about having a setup that is technically clear and easy to understand. That’s exactly what GutRad StVO Modules are made for: CE-marked hardware modules designed to align your Bafang BBS drive with a pedelec / bicycle configuration.

The GutRad StVO Module implements the typical pedelec criteria in a technical, transparent way: power is limited to 250 W, pedal assist ends at 25 km/h, and an existing throttle is deactivated. This gives you a clean, traceable solution — without software experiments and without unclear grey areas.

Especially with conversions, a clearly defined power framework is often crucial. If limitations are not implemented properly or are hard to verify, uncertainty can arise — in technical classification, in real-world use, and in critical situations. With a hardware-based solution, you create a much clearer foundation for a rule-oriented pedelec setup.

Your benefits at a glance

• Pedelec / bicycle configuration for Bafang BBS

• Pedal assist up to 25 km/h

• Power limited to 250 W

• Throttle deactivated (pedal assist in focus)

• CE-marked hardware solution instead of a “software grey zone”

• Clean, clear, and traceable for rule-oriented operation

Who are these modules for?
GutRad StVO Modules are ideal for you if you want a reliable technical solution to operate your Bafang BBS conversion in a clearly defined pedelec standard — without unnecessary risks and without “just somehow”. The goal is clear: pedal assist instead of a vehicle-like character — technically clean and easy to understand.

Bafang BBS01, BBS02 and BBS03 (HD) - D.I.Y. Motor Kits

Our StVO Module for legal Bafang BBS operation throughout Europe!

The StVO module* was created to operate powerful BBS systems as a legally unregistered pedelec (bicycle with pedal assistance) easy and without complicated programming adjustments.

Our module is the only product on the market that allows the use of a larger and more robust motor from the Bafang BBS series as a pedelec - without registration, insurance coverage or a driver's license.

During the first use, the existing controller data is read and stored in the module. Then, the module automatically adjusts the data of the controller for the operation of a pedal-assist bicycle with a maximum speed of 25 km/h and 250W nominal power output.

From this point on, the used BBS motor group (with correct wheel size adjustment) is adapted to the current regulations and is onsidered as a bicycle.

The original or personal parameter settings of the BBS controller can be restored with the included GutRad Key, e.g. to remove the module again (data recovery) or for rides on private property.

If you decide to permanently store the StVO data in the controller and module, you can disconnect and reconnect the module in StVO mode once. Protect yourself and your BBS system with the module.

The module is compatible with all original Bafang displays.

The use of EggRider displays, SpeeedApp, etc. is illegal on roads.

*within the scope of the EU regulations for pedelec25 operation

The module adjusts the BBS motors to meet the regulations for maximum speed of 25km/h and maximum power automatically.

The module can simply be plugged into the wiring harness and seamlessly integrates into the overall look of the motor due to its design.

The strong ABS housing of the module is attached to the designated spot on the motor with 3M industrial adhesive which already comes with the module.

No tools are needed for assembly.