SpeedBox 1.2 B.Tuning para Shimano (E8000, E7000, E6100, E5000)
SpeedBox 1.2 B.Tuning for Shimano (E8000, E7000, E6100, E5000) With SpeedBox you won’t be limited to the speed of 25 km/h anymore. You can freely enjoy the maximum power of your electric bike, limited only by your pedaling frequency.