FSA Orbit C-40-ACB Integrated Bicycle Headset for Carbon & Alloy Frames,

FSA OrbitIS42/28.6 (45/45) | IS52.1/39.78 (36/45). Item Specifications: Color, Black, Bearing Type, Cartridge, Crown Race, 40, Weight, 86, Defined Color, Black, S.H.I.S Upper, IS42, S.H.I.S. Stem Clamp Diameter, 28.6 Threadless, S.H.I.S Lower, IS52,.

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