Clement crusade pdx folding cyclocross tyreclements crusade pdx is a great all round performer with a love of mud and is aligned to give the rider fast roll and control in the curves the crusade pdx portlands airport code is named after portlands famous cross crusade the largest participant cyclocross series in the world pdx tread is designed to roll fast on hard pack mud and to really bite and stick in the corners regardless of the weather the centre tread is aligned lower than the side