B 543 2RS AC - 1-1/2 Angular Contact Headset Bearing (Cannondale Lefty) TH-873 unlike other bearings

unlike other bearings

precision-machined aluminum cups that thread directly into the BB shell

BKSM-8142 - Maxhit

The most common use for this bearing is as a replacement bearing for Shimano external-cup

MR 22371 LLB-E - ABEC-3

B 543 2RS AC - 1-1/2 Angular Contact Headset Bearing (Cannondale Lefty) TH-873 unlike other bearingsB 543 2RS AC 1 1 2 Angular contact Headset Bearing (Cannondale Lefty) 1 9 16 x 2 x 9 32 inch 1 1 2 Angular contact Bearing for Internal Headset featuring 52100 High Carbon Chromium alloy races paired with grade 10 Balls. (Cannondale Lefty) The Enduro line of angular contact headset bearings start with Black Oxide treated Chromium Steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime guaranteed, XD15 aerospace