The song may beg you to “unchain your heart,” but for those who use single speeds or internal geared bikes there is now a way to cover the chain. The BioLogic FreeDrive, which has actually been around for a while but is only now starting to get in gear and get more attention, is a low-friction chain protection solution that can reduce chain vibration while keeping clothing free from grease. It is has the look of a belt drive but all the efficiency of a chain.
httpv://youtu.be/8KjNAPAdtGw