Wcs 40world championship series41 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 innovationfeaturesfast rolling low profile vfa tread pattern is perfect for racing and hardpack conditionsside knobs employ vfa design for consistent traction at all cornering anglesfeatur