Tuning Chip Set E-Bike SPEEDBOX 3.0 `20/`21 (Gen4) with crank puller …
Speedbox 1.0 B.tuning For Bosch Smart System
Speedbox 3 for Bosch Gen 4 - YouTube
SPEEDBOX 3.0 for Bosch / eBike Tuning, also for Bosch engines of the 4th Generation / Smart tuning chip of the 3rd Generation incl. 1 crank puller : Amazon.co.uk: Sports & Outdoors
SpeedBox 3.0 B.Tuning for Bosch - Personal Electric Transport
SpeedBox 3 tuning module for Bosch 2020 (Generation 2 / 3 and Gen 4)– E-Bike Tuning