A very cheap way i found to make my ebike a lot faster(with Bosch motor). just 1 lashing -or ducktape- and 1 magnet is needed. it tricks the speedsensor so it doesn’t shut off at 25km/h. *UPDATE!*- if this system doesnt work, you probably have a newer type of bike. check out this video instead – https://www.youtube.com/watch?v=ElTS-BVY3Vs .