The 40-Series sets the standard for performance, durability and value.  Drawing from the Premium 110-Series Design, the 40-Series incorporates all the features necessary for a durable, light-weight, long-lasting headset.   To make it easier, we developed consistent graphics, interchangeable parts and over 40 configurations to meet almost every need.  Sold in straight and tapered assemblies or tops & bottoms, 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. This is a drop fit or integrated headset top half. There is no cup, the bearings simply drop into the frame. For 1 1/8th Steerers.