Switch brake levers are for fast stop motor during abrupt braking.
The EVBIKE WHEEL KIT set have longer overrun of motor, is necessary to use switch brake lever for accepting law. In EVBIKE CENTRAL KIT is not necessary instal switch brake levers, because when you stop pedaling, motor automatically stop working during few milliseconds. Freewheel not affect a braking parameters of bike. This set is suitable for bikes with hydraulic disc brakes. You can use the unutilized conector of braking levers for connect for example GEARSENZOR.