ACS MainDrive Integrated Headset - 1" Black. MainDrive Integrated Headsets feature CNC machined alloy tops with 45/45 degree sealed mechanism retainer bearings.
- TECH SPECS
| S.H.I.S. Stem Clamp Diameter | 25.4 Threadless |
| Defined Color | Black |
| S.H.I.S Lower | IS38 |
| Crown Race | 26 |
| Bearing Type | Cartridge |
| Color | Black |
| S.H.I.S Upper | IS38 |