DURA-ACE WH-R9270 C50

The reduction of aerodynamic drag is the main discipline of the Dura Ace WH-R9270-C50 wheelset. In addition, the low overall weight and the resulting low rotating mass in combination with outstanding lateral and drivetrain stiffness lead to a balanced ratio of those values that significantly determine the performance.

The 50 mm deep wheels owe their aerodynamic efficiency not least to the sophisticated D2 rim design. In combination with the low weight, which makes the set even lighter than the C40 predecessor model, the wheels feel at home almost everywhere, whether in time trials or criteriums, in hilly terrain or when chasing best times.

Thanks to Direct Engagement technology, the freewheel hubs offer outstanding drivetrain stiffness which results in an even more direct feeling of power transmission and is particularly noticeable in the starting torque. Meanwhile, the OPTBAL system with its 2:1 spoke ratio further improves the stiffness of the rear wheel.