When motor assist and human leg power meet, the range of terrain a bike can conquer grows almost exponentially. The h 1900 spline are designed for that. We have given them the reliability of swiss precison hubs, tough spokes and a strong, yet lightweight rim to head out into unknown rides, just to see how far this new man / machine system can go. But you needn't worry: like all of our products, passionate employees have tested the h 1900 spline to their limits in the notoriously rough and steep jura mountains to prove their reliability so you don't have to, for that and because it's a whole lot of fun.