When engine assistance meets human muscle strength, the number of land that a bicycle can conquer. The H 1900 Splies wheels have been designed specifically to meet the robustness requirements of electric bicycles. Instead of changing the tested profiles of the rims, the SWISS HYBRID DT models has been added additional material where it is most necessary. These parts have been reinforced in the most loaded points, so that aluminum wheels can not only resist at higher speeds, but also to bear a system weight up to 150 kg. To offer each cyclist the best possible adherence and optimal traction, the H 1900 wheels are also available with two different internal widths. The combination between the tested hub 370 and the reinforced Hybrid 1 rays, which increase lateral and torsional rigidity, also promotes the resistance of the wheels. To cope with the highest loads of electric MTB, the rear wheel was equipped with a specially tempered steel box support and the Ratchet LN free wheel system for a more diversified distribution of power.