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 innovationfeaturesa cross press fit style headset with brake mounttitanium coated high quality long lasting bearings only featured in wcssupplied with matching ritchey alloy star nut contains sta