SpeedBox 3.2 for Brose S-Mag Pro FIT

SpeedBox 3.2 for Brose removes the 25 km/h speed limit of e-bikes with the Brose S-Mag Pro FIT motor, so riding feels more natural and you can enjoy unlimited speed. After installing the chip, the e-bike display shows real data such as maximum or average speed, daily distance, and range.

Note: The Speedbox App is an application specially designed for Speedbox B. Tuning products only. With a non-Bluetooth Speedbox product like this one, the Speedbox App is unavailable.

The tuning kit manipulates the speed signal without altering the motor's power relative to pedaling speed. This guarantees a smooth motor control without speed limit interruptions. Depending on a tuning kit, some determine when assistance stops, while others remove the restriction entirely for continuous support. However, the achievable speed mostly depends on the eBike model. Achievable speed can be calculated using a simple formula:

Speed = Cadence [rpm] * Wheel circumference [mm] * Front Chainring Teeth / Rear Chainring Teeth * 60 [min/h] / 1.000.000 [mm/km]

You activate the tuning by double-pressing the LIGHT button or using the button combination + - + -. The value 5 km/h will briefly appear on the display, indicating that the tuning is active.

You deactivate the tuning in the same way. The value 2 km/h will appear on the display and the e-bike will then work the same as before installing the tuning.

You can change the maximum assist speed by switching the controller to AUTO mode and then switching three levels down and three levels up (STD - ECO - OFF - ECO - STD - AUTO). Each double-press of the LIGHT button increases the maximum assist speed by 5 km/h. The display does not show decimals, so a value of 3 corresponds to a limit of 30 km/h, 4 to 40 km/h, etc. The last displayed limit will be saved after five seconds of inactivity.

Compatible with motors:
Brose S-Mag Pro FIT
For other Brose motors use SpeedBox 3.1 for Brose and Specialized motors

Not compatible with:
Enviolo Automatiq
E-bikes with ABS
E-bikes that do not have a connector in the display port (usually there is just a dummy plug instead)
SpeedBox App

When connecting the SpeedBox tuning kit to an e-bike you will find connectors colored to make installation very simple. The package includes a printed manual with a wiring diagram, and we have prepared detailed instructions to make installation easy for you. Disassembly of our tuning chip is just as easy. If you have any troubles with installation or disassembly, do not hesitate to contact us.

If you are planning to install SpeedBox on a brand-new bike, make sure you ride it for at least 0.6 miles (1 km) before the chip is activated.

Download the user manual (PDF)
Download the connection diagram (PDF)

Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use SpeedBox products. Electric bikes equipped with SpeedBox products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with SpeedBox products can be used exclusively on private property and entirely at one’s own risk.

The use of SpeedBox may void the warranty of your ebike.

We strongly recommend using other safety features and protective gear to prevent injuries in higher speeds.

SpeedBox Products are thoroughly tested and we stand by their quality. SpeedBox provide Life Long warranty to all their Products!

If You have any questions, please do not hesitate to contact us. Thank you for looking! Two Wheels Empire Team

Warranty does not cover damage resulting from eBike software updates. Remove the tuning kit before updating the software. Check with us first to ensure the kit is compatible with your updated eBike. We cannot guarantee that the kit will function the same after updates. Please exercise caution. If your Speedbox tuning kit needs updating due to updated eBike software, please contact us at hi@twowheelsempire.com. Preliminary costs are 49£ + shipping costs.