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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
- TECH SPECS
| Color | Black |
| Bearing Type | Cartridge/Angular Contact |
| Crown Race | 40 |
| Weight | 92 |
| Defined Color | Black |
| Upper Stack Height | 10.9 |
| S.H.I.S Upper | ZS55 |
| S.H.I.S. Stem Clamp Diameter | 31.8 Threadless |
| S.H.I.S Lower | ZS55 |