, CNC-machined forged aluminum cups ensure durability and precise fit for long-lasting performance. Built with high-grade chromoly steel bearings, providing smooth rotation, enhanced strength, and excellent load capacity for demanding riding conditions. Designed for 1-1/8 inch standard steer tubes with a 36 x 45mm size, offering universal compatibility across a wide range of bicycle frames and forks. Advanced sealing technology with blue seals offers superior protection against dirt, dust, and moisture, extending bearing lifespan and maintaining optimal performance. Ideal for road, mountain, and hybrid bikes, this FSA Micro ACB Blue Seal Headset Bearing combines innovative engineering with sleek style to improve steering precision and bike handling. Enhance your bike's steering precision and durability with the FSA Micro ACB Blue Seal 36 x 45 1-1/8" Standard Headset Bearing. Designed for high-performance cycling, this headset bearing combines innovative engineering with durable materials to deliver smooth, reliable operation on every ride. Materials & Construction: Crafted from high-grade Chromoly steel, the FSA Micro ACB bearing offers exceptional strength and corrosion resistance, ensuring longevity in harsh riding conditions. The precision CNC-machined cups provide a tight fit and superior stability, while the Blue Seal grease seals protect against dirt, water, and debris for maintenance-free performance. Performance & Engineering: Engineered for optimal load distribution and minimal rolling resistance, this bearing features a 30.2mm inner diameter and a 41mm outer diameter with a robust 6.5mm thickness. Its streamlined design ensures smooth steering articulation, reducing fatigue and increasing control on rugged trails or city streets. Components & Technology: The FSA Micro ACB incorporates advanced sealing technology with Blue Seal grease caps, enhancing the bearing's durability and sealing efficiency. The forged and CNC-machined cups ensure precise fitting and alignment, promoting consistent steering performance and ease of installation. Style & Use Case: Perfect for mountain biking, cyclocross, road cycling, and custom builds, this headset bearing complements both performance-oriented and style-conscious bikes. Its sleek, blue-sealed design adds a touch of color while maintaining a professional, high-end aesthetic. Innovative Features: The FSA Micro ACB bearing's combination of CNC-machined precision cups and Blue Seal technology distinguishes it from standard bearings, offering enhanced environmental sealing and reduced maintenance. Its compact, lightweight profile makes it ideal for riders seeking top-tier performance without added weight. Upgrade your bike's headset with the FSA Micro ACB Blu