SpeedBox 3.3 for Yamaha (PW-X3, PW-S2)UK STOCK A smart chip of the third generation with an option to set a speed limit of an e bike SpeedBox 3. 3 tuning chip enables to select speed limit of your own choice. After the chip is installed, your e bikes display will show real data, such as maximum and average speeds, daily mileage and cruising range. How does SpeedBox 3. 3 work? The tuning kit can be activated directly on your bikes display. After pressing the LIGHT button or , a value of 9.
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