Cannondale Headset 1 1/8 to 1.5" Tapered ZS Head Block Steer Stop 36 Degree Cr Race K35048Original Cannondale Head Block steer stop headset for ZS44 ZS56 frames. This headset allows you to prevent the fork from turning so far that it may come in contact with the downtube on the frame which is sometimes common on smaller frame. Kit includes: upper locking conical spacer, upper locking plate, upper bearing wedge, upper bearing, ZS44 cup with stop, ZS56 lower cup, lower bearing, and 40mm crown race. Today's Stock Status 1 Ready to ship or