The Blackbearing ZS56/40 Lower Headset Bearing offers exceptional steering precision and smooth performance for modern semi-integrated headset systems. Designed to deliver a perfect fit and long-term reliability, it ensures a stable connection between your frame and fork.

Optimized for 1-1/8" Forks: With compatibility for 1-1/8 inch (30mm) fork steerers and 56mm frame diameter, this bearing fits seamlessly into semi-integrated (Zero Stack) headsets. It provides secure alignment, enhancing steering accuracy and ride stability.

Engineered to SHIS Standard ZS56/40: Following the SHIS ZS56/40 specification, it guarantees a precise fit for frames built to this standard. Its exact tolerances make it a dependable choice for replacing worn or damaged lower headset bearings.

Durable, Smooth and Consistent: Crafted from high-quality materials, the ZS56/40 bearing offers low-friction rotation and excellent resistance to wear. This results in improved steering response and smooth operation over long-term use.

Sealed against dirt and moisture, the bearing maintains its smoothness even in harsh riding environments. The Blackbearing ZS56/40 Lower Headset Bearing delivers lasting durability and precision for every ride.