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 innovation new for 2013 one of the lightest toughest seatpost designs in the world now designed for the modern day trail bike features 3d forged 7050 reverseable clamp offers 5 to 15mm offs