Roller brakes are the new generation of hub brakes. They are distinguished by being extremely low-maintenance and exhibit little wear and tear. However, generall speaking, it can be said that this brake system is suitable for city bikes. In the case of mountain bikes and other sports bikes this brake would be hopelessly overstretched. However, as already mentioned, it has its own area of application. All this brake needs in terms of maintenance is the odd application of fresh grease.