RVOLVER®'s innovative design features a sliding clutch system that disengages the ring from the pawls while coasting to reduce friction. When you resume pedaling, the ratchet ring re-engages to deliver an instant power transfer. Our engineered design supports cross tension of the spokes, torsion of the dropouts, load capacity of the bearings, traction of the cassette and continuously exposed to dirt, moisture and mud. For this reason, we created from scratch superior hubs with lightweight and high performance, built to last a lifetime.