Black Bearing - 45X45 11/4 - 41.8OD X 32.8ID X 6H - MR136 - B23

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: 1-1/4"
OUTER DIAMETER: 41.8mm
INNER DIAMETER: 32.8mm
HEIGHT: 6mm
CHAMFER ANGLES: 45°/45°

• Chrome steel balls SAE52100
• Chrome steel races SAE52100
• Premium quality grease
• Also referred to using the following part code: MR136
• Upper bearing used in Giant OD2 headset assemblies