Is the ZN40 38mm Zinc Bearing the Precision Fit You Need?

The Cane Creek ZN40 38mm Zinc Plated bearing handles the smaller-diameter upper cup positions found on certain road and gravel headsets, delivering the precision and durability you expect from a quality replacement component. The zinc-plated cartridge construction provides a corrosion-resistant barrier against moisture and road spray, while hardened steel balls maintain smooth, reliable rotation through demanding mileage. Upgrading to a ZN40 at this position means fewer maintenance headaches and a consistently crisp steering feel.

This 38mm bearing is compatible with Cane Creek 110-, 40-, and 10-Series headsets that call for a smaller upper bearing, making it a precise replacement for worn or corroded components in those configurations. Notchy steering that cannot be resolved by preload adjustment often points directly to bearing wear, and a fresh ZN40 typically resolves it immediately. A go-to part for riders who wrench their own bikes and want the right component on the shelf before it becomes an urgent mid-season fix.