Rotor R-Volver is the name of the first hub from Madrid and of course it is not just a hub. The system is based on a patented and contact-free freewheel, thus guaranteeing freedom from friction. When driving, the used pins immediately engage in the clutch.
The very light R-Volver front hub for racing bikes is 100% CNC machined. The contact reduced bearing seals clearly improve the rolling resistance and the durability.