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: 51mm
INNER DIAMETER: 40mm
HEIGHT: 6.5mm
CHAMFER ANGLES: 36°/36°
- Chrome steel balls SAE52100
- Chrome steel races SAE52100
- Premium quality grease
- Also referred to by the following part codes: TH-072, MR006