Olocus System brings gearwheel and rider to a new world. The wheel rim set is usually changed by extraordinary spinning or partly broken in the hub. It does not work, even after replacing broken parts, it requires special tools and an experienced technician. It cannot be fixed in a bicycle shop or maintenance center. All riders with the Olocus System do not need to worry about this. We don’t need to worry about hearing the sound of broken parts when you are riding.