Problem Solver Headtube Reducer Reduces 2" Cannondale Headshok Headtube to 34mm

Problem Solvers Headtube Adaptors Leave the Cannondale headshock cups in the frame, remove the cartridge bearing, then insert headtube reducers Adds 12.5 mm to the top and 6.5 mm to the bottom of the headset Total stack height: 19mm