M 1900 SPLINE® For reliable freedom in the mountains. After a long climb, the perfect trail opens up beneath your tyres: flowing, dusty, varied and seemingly endless. With the M 1900 SPLINE, nothing can stop you from getting your fill of All Mountain thrills. Designed to offer the best balance between weight and durability, this rim delivers efficient climbing characteristics as well as excellent impact resistance on tight, technical trails. Thanks to the new Ratchet LN system and hand-built construction by experienced technicians, this wheel is the dependable partner for your mountain descents.