Tuning Chip E-Bike SPEEDBOX 1.3 B.TUNING 4 pin connector for 4 pin connector Assembly: invisible at the drive motor displayed: Actual values up to 23 km/h, then in app activation: light-button controls:
INSTALLING SPEEDBOX 3.0 ON BOSCH CX 4 PERFORMANCE LINE MOTOR #bosch #emtb - YouTube
SpeedBox 3 for Bosch 2020 (Generation 4) with crank puller– E-Bike Tuning