Version v1 is the smaller cap for earlier 2.7mm models before 2019 Version v2 is the larger cap for 3.3mm shaft for new models 2019 onwards. Red Cap Button for the Controller Push Switch
MT I and MT II Launch
SSD Brake
Carrera Brake
SCX Brake
Ninco Brake
The Cap is a press fit over the switch shaft. Black Cap Button for the Controller