Speedbox Yamaha 3.4 speed increasing device

Unleash your Yamaha e-bike’s full potential with the SPEEDBOX 3.4 tuning chip! This third-generation speed unrestricter completely deactivates the 25 km/h speed limit, giving you the freedom to ride at your true maximum speed. Go beyond just removing the limit—set your own custom top speed to match your riding style. Crucially, the SPEEDBOX 3.4 preserves your display’s accuracy, showing real-time speed, mileage, and range data. Effortlessly activate or deactivate the chip on the fly with a simple button press, and enjoy a simple, reversible installation. Take control and experience the thrill of unrestricted performance