With the SpeedBox e-bike kit, you're no longer limited to 25 km/h. You'll experience the full power of your e-bike, determined solely by your pedaling cadence. This next-generation tuning chip features Bluetooth technology and a smart app for your e-bike, making it our most powerful and versatile product. The new SpeedBox B.Tuning provides a unique connection between an e-bike and a smartphone. The chip removes the speed limit of the pedelec, allowing you to ride at unrestricted speeds. With the SpeedBox app, you can monitor and record all riding parameters directly on your smartphone—anytime and anywhere.