While the increased torque should significantly influence the handling at low cadences, the main aim of the new update was to refine eMTB mode. However, both the peak power output and maximum support of 340% in Turbo and eMTB modes remain unchanged.

Without any changes in the hardware, the motor now delivers up to 85 Nm torque, up from 75 Nm and should, therefore, be more powerful, especially when pedalling at low cadences. With the latest update, the Performance Line CX should be even more refined, especially on sporty eMTBs. Since its launch in June 2019, Bosch have further refined the Performance Line CX motor’s firmware. The new firmware delivers an extra 10 Nm torque Head over to our big motor group test to find out how the Bosch fared against the competition from Brose, Shimano and more. We also compared the Bosch Performance Line CX, updated with the new software against other popular motors on the market. We’ve been testing the update for several weeks, on different bikes and in different conditions, and compared it against the old software. As a result, the characteristics of each motor, from the Cargo Line all the way to the classic Performance CX, should be more differentiated and provide optimised ride dynamics for where they are used.

According to the manufacturer, the latest update allows them to adapt the behaviour of each motor more specifically to its respective area of application. One year after launching their new Performance Line CX 2020, Bosch have released a new software update for all of their current ebike motors.

Bosch diagnostic tool ebike software