X 1900 SPLINE® Discover the world of cross-country with a reliable wheel that lets you focus on the moments that matter. Discover the world of cross-country with the X 1900 SPLINE. The 25 mm aluminium rim gives modern tyres the support they need to run at lower pressures, reducing rolling resistance. The new Ratchet LN freehub system, combined with meticulous hand-built construction, ensures maximum reliability. This lets riders concentrate on what counts, whether that's putting their rivals through the wringer or beating their KOM or QOM personal bests.