Durability And Value Cane Creek’s 40-Series sets the standard for performance, durability and value. Drawing from the premium 110-Series design, the 40-Series includes all the features necessary for a durable, lightweight, long-lasting headset. Cane Creek make it easier, by developing consistent graphics, interchangeable parts and over 40 configurations to meet almost every size need. Sold in straight and tapered assemblies or tops & bottoms, tops are available in either short (9mm) or tall (15mm) stack height bearing covers, Cane Creek’s 40-Series offers the largest fitment range of any headset line on the market. Precision engineered by Cane Creek in Fletcher, NC. Updates NEW! The new ZN40 bearings are a zinc-coated, machined steel cartridge bearing with hardened steel balls. The new material is much more corrosion-resistant, which vastly increases the longevity of the 40 series headsets.