Black Bearing 1 1/8" Headset Bearing B3

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: 1-1/8"
OUTER DIAMETER: 41mm
INNER DIAMETER: 30.15mm
HEIGHT: 6.5mm
CHAMFER ANGLES: 36°/45°

- Chrome steel balls SAE52100
- Chrome steel races SAE52100
- Premium quality grease
- Also referred to using the following part codes: TH-873, MR-122