Wh r9100 cl carbon clincher wheels designed to meet pro road race criteria full carbon alloy 208 mm wide rim low rim weight is achieved by reducing the alloy wall thickness from 13 mm down to 07 mm then a patented phosphoric acid anodizing process is used to bond the carbon fibre to the alloy giving an excellent combination of low weight strength and rigidity carbon reinforced spoke eyelets alloy clincher rim maintains high braking performance 20 rear and 16 front stainless steel bu