Wcs world championship series these words evoke the core philosophy behind ritcheys highest performance components the rainbow stripe wcs logo represents the numerous world champions that have won on ritchey the wcs line is the gold standard for lightweight bombproof race parts and cutting edge innovationfeaturestitanium coated high quality long lasting bearings only featured in wcsfeatures cross brake mountsupplied with matching alloy starnut star nut bolt top caplightweight precision