Innovating Rigidity
A series of experiments designed to identify how best to offset torsional load caused by longitudinal force, especially when most of the rider’s weight is being borne by the pedals during sprints, led us to select tangent spokes with straight spokes in a 2-cross laced pattern. This straight pull, plus 2-cross spoke configuration on the driveside has optimized torsional rigidity necessary for quick acceleration and power transmission.

Comparison of wheel weight and driving rigidity

The WH-7850 series offers dramatically improved driving rigidity compared to previous designs.
200kg load capacity (53T x 15T)

Comparison of new and previous DURA-ACE models (ideal rim deviation is 0mm)