FSA Orbit Carbon Integrated Headset - 1 1/8" SteererFSA Orbit Carbon Integrated Headset 1 1 8" Steerer Headsets are a surprising technical component. Bicycles owe their stability and their sensitive steering dynamics to their unique design. The headset is the critical element to ensuring performance. FSA headsets are carefully engineered and updated to deliver the highest performance and value. This one features a 36 degree and a 45 degree angular contact cartridge bearing. 41mm sealed cartridge