H 1900 SPLINE® A reliable pair of aluminium wheels, now featuring Ratchet LN technology to take e-MTB rides further. When electric assistance meets the pedalling power of an experienced mountain biker, the range of terrain you can ride opens up in ways you might not expect. The H 1900 SPLINE was designed with exactly this in mind, and now incorporates DT Swiss's renowned toothed ratchet ring technology. The Ratchet LN system spreads the combined forces of rider and motor over a larger surface area than traditional pawl freehub systems, which also extends the system's service life thanks to lower peak loads. The 370 hub, combined with reinforced Hybrid spokes and a high-strength aluminium rim available in two internal widths, transfers all of the power generated to the ground.