The new generation Ratchet System hubs: Lighter than ever before. More direct than ever before. Bladed spokes and wheel build Lightweight and the standard for quality and reliability. Rims: Lean like an athlete. That's the XRC 1200 SPLINE 27.5. It accelerates like nothing else, tracks like nothing else and is reliable like nothing else. It is the benchmark for high speeds on any trail, on any gravel road in any race. Whether that race takes place between the tape or in your head.