The FSA Micro ACB Black Seal is a high-quality replacement headset bearing designed for 1.5-inch steerer systems. This angular contact bearing (ACB) features a 36-degree internal and 36-degree external angle, ensuring smooth rotation and reliable alignment for modern mountain and road bike front ends.

Engineered for durability, this bearing includes a specialized black seal to protect the internal races from dust and moisture. As a standard FSA component, it provides a precise fit and consistent performance, making it an essential part for maintaining a responsive and quiet steering assembly.