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
Tuning de-restricting a Bosch Gen 4 eBike VOLspeed chip - YouTube
Bosch CX eBike Speed Unlocker Chip 4th Gen Motor 2019 & 2020 Models - YouTube
Tuning Chip E-Bike VOLspeed V4 | E-Bikes/Pedelecs BOSCH Active/ Plus / – Falan Parts
Tuning e-bikes with Bosch mid motor - Package: BOX, Qty: 1 pcs