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
Volspeed V4 Bosch 2021 - for Bosch Gen2 / Gen3 / Gen4 2014-2023 (not B – Two Wheels Empire
SpeedBox 3.0 B.Tuning for Bosch (incl. Gen4) – ASA cycles
SpeedBox 3.0 Bosch Active Performance CX | NEW 2021 Version E-Bike Tuning Gen. 4 | eBay
Bosch tuning with asa speed
How to install Speedbox 3.0 on Bosch Gen 4 Performance Line CX 2021 eBike - YouTube