With its highly aerodynamic 73mm rim, the UP 18-spoke wheel offers excellent rigidity and will surprise you with its lightness. With its highly aerodynamic 73mm rim, the UP 18-spoke wheel offers excellent rigidity and will surprise you with its lightness. The qualities of the UP ''S'' wheel mean it can be combined with many other wheels in the CORIMA range (for example, a UP ''S'' front wheel with a Paracular rear wheel, or the VIVA ''S'' at the front and the Up ''S'' at the rear). The UP ''S'' rear wheel is equipped with 20 spokes (CX) under the 12/8 system developed by CORIMA. Use only a few...