Zipp 30 course clincher disc road rear wheelthe zipp 30 course clincher is fast so fast that it will get you where you are used to going faster the strong and aero designed aluminium rim is effective for races gravel adventures cyclocross and training rides the inclusion of a disc brake mount and the ability to run 11 speed cassettes including a sram xd driver means this wheel is at the pinnacle of modern technology this wheel is perfect for on the road in the mud and every other cyclin