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The tuning chip with Bluetooth technology and mobile app for your e-bike with Bosch Gen4 motor and Smart System. Enjoy your unlimited ride and all the great functions that our SpeedBox App has to offer. SpeedBox B.Tuning brings a unique connection of e-bike and mobile phone and suppresses the spee..

The tuning chip for e-bikes with the newest Bosch Gen4 motor and Smart System. SpeedBox 1.0 enables you to suppress the speed limiter on your e-bike. When in use, the display shows the real speed up to 22.2 km/h. After exceeding this speed your actual speed is indicated on the last two digits of t..