ENDURO BEARINGS B 543 2rs a/c - abec 3 (angular contact) - 1 9/16''x2''x9/32''

Upgrade your bicycle's steering with the B 543 2RS AC angular contact headset bearing, designed specifically for Cannondale Lefty forks. Measuring 1-9/16 x 2 x 9/32 inch, this high-performance bearing features 52100 high-carbon chromium alloy races paired with grade 10 balls for exceptional durability. The Enduro line offers superior protection with options ranging from black oxide-treated chromium steel to full 440C stainless steel, and the premium XD-15 aerospace stainless steel, all guaranteed for a lifetime. Engineered with the largest possible balls and dual-lip labyrinth seals, these bearings are filled with 90% waterproof, high-pressure grease to withstand sweat and harsh elements. Designed for optimal force distribution, they reduce friction, minimize wear, and extend bearing life, supporting static loads up to 1320 lbf / 5.86 kN. Weighing only 28.77 grams, they deliver high performance in a compact, reliable package.