Full Speed Ahead C-40 Headset Lower (36 x 45) (IS52/40)

FSA Headset Solutions. Features: FSA's flagship headsets in separate upper and lower headset cup assemblies Upper assemblies include star nut and top cap, while lower assemblies include crown race FSA Integrated 41.2mm ID (36x45), Campy Hiddenset 42.0mm ID (45x45) , ZS (ZeroStack), or EC (traditional External Cup) available for 1-1/8" and tapered steerers For clarification go to http://www.fsaeasyheadset.com Specs: Model:C-40 Upper Lower:lower S H I S:IS52.1/39.78 Stack:0.7mm Color:black