Black Bearing - 45X45 11/8 - 41.8OD X 30.5ID X 8H - 870 - B70

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: 41.8mm
INNER DIAMETER: 30.15mm
HEIGHT: 8mm
CHAMFER ANGLES: 45°/45°

• Chrome steel balls SAE52100
• Chrome steel races SAE52100
• Premium quality grease