Hi Rolling 1-1/8th 45/45 sealed bearing. This bearing has a slightly higher stack height for better fork clearance needed with some frame fork set ups.
External Diameter: 41.8mm
COMPATIBILITY:
• Fits 1-1/8" integrated head tube frames
• Fits 1-1/8" Steerer forks
| Headset Types | Integrated - IS |
| Steer Tube Diameter | 1-1/8" |