B 543 2RS AC - 1 1/2 Angular Contact Headset Bearing (Cannondale Lefty)
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B 543 2RS AC - 1/2" Angular contact Headset Bearing (Cannondaleefty) 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, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.
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