Problem Solver Headtube Reducer Reduces 37mm to 34mm 1-1/4" to 1-1/8" headset BLK

Problem Solver Headtube Reducer Reduces 37mm to 34mm (1-1/4" to 1-1/8" headset) Black. Problem Solvers Headtube Reducers adapt your headtube to accommodate different fork sizes. These reducers are designed for traditional external cup headsets.