Full Speed Ahead ACR No. 55R Headset - 1.5"

FSA ACR (Aerodynamic Cable Routing) Headsets are suitable for both road and MTB riding styles and feature angular contact bearings. A fully integrated cable routing No rotation limit ACR top cover Angular contact bearing 1.5" headtube Specific frame required Upper Stack Height: 10.9 Defined Color: Black S.H.I.S. Stem Clamp Diameter: 31.8 Threadless S.H.I.S Lower: ZS55 Weight: 92 Bearing Type: Cartridge/Angular Contact Crown Race: 40 Color: Black S.H.I.S Upper: ZS55