The clement crusade pdx tubeless folding 700c tyre clement39s crusade pdx tubeless is a great all round performer with a love of mud and is aligned to give the rider fast role and control in the curves 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 center tread is aligned lower than the side edge to create fast roll on hard pack and road whatever the weather clement crusade pdx tubeless fol