HSS-6011 or "6808 LLB BO 45" 1-1/2 Black Oxide Coated Headset Bearing (40mm x 52mm x 7mm: 45deg chamfer on inner race only).

Hardened chromium steel balls and races. Races have black oxide anti-corrosion treatement. Direct replacement for many 1.5" headset bearings. Please see the drawing for exact dimensions.

Fits the following 1-1/2" FSA headsets:

FSA Orbit Xtreme Pro 1.5
FSA Orbit Xtreme Pro 1.5R (reducer headset)

Sold individually.