FSA Headset Bearing MR031S (IS-2-138)

- Installation available in-store (fees apply).

This is a genuine FSA MR031 headset bearing, a steel angular contact bearing used as the lower headset bearing on the Cervelo R3 and R5. This bearing may also be listed under its alternative reference, IS-2-138.

Dimensions: 37 x 48.9 x 6.5
Chamfer: 36/45
Inch Ref: 1-1/2"
Model: FSA MR031 (IS-2-138)
Bearing Type: Steel, 36x45 degree angular contact
Compatibility: Cervelo R3, Cervelo R5 (lower headset)
Alternative Ref: IS-2-138