Black Bearing headset bearings are machined and assembled to precise tolerances.
Please check precise measurements against the below to determine the correct size.
SPECIFICATIONS
STEERER DIAMETER: 1-1/2"
OUTER DIAMETER: 51.9mm
INNER DIAMETER: 40mm
HEIGHT: 7mm
CHAMFER ANGLES: 45°/45°
- Chrome steel balls SAE52100
- Chrome steel races SAE52100
- Premium quality grease