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, Cane Creek 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 one of the largest compatibility range of any headset line on the market. Precision engineered by Cane Creek in Fletcher, NC. 
Compatibility:
Interlok® spacer compatible.
Internal parts are cross-compatible across the 10, 40 and 110 series. 
Headset upper part with 15mm top cap for 1 1/8" or tapered fork. 
The name 40.ZS44 Short Cover Top describes the semi integrated (also known as press fit or zero stack) 1 1/8" Ahead headset for frames with a 44mm inner diameter head tube. The S.H.I.S. denotation (see attachment) of the upper part offered here is ZS44/28.6.
Material: Cups and Covers: 6061 T-6 aluminium
Crown Race: Split Glass-Reinforced Polyamide
Bearings: Black Oxide
Weight supplement: manufacturer information
| Product name: | Cane Creek 40.ZS44 Tall Cover Top Headset Upper Part 1 1/8 Inches - ZS44/28.6 | 
| Manufacturer: | Cane Creek | 
| Item code: | CCR160793 | 
| Activity: | Cycling | 
| Usage bikesport: | Road Bike, MTB | 
| Steerer tube ø: | 1 1/8" straight ahead, 1 1/8"-1 1/4" tapered, 1 1/8"-1 1/2" tapered, 1 1/8"-1 3/8" tapered, 1 1/4"-1 1/2" tapered | 
| S.h.i.s.: | semi-integrated (ZS) | 
| S.h.i.s. top: | ZS44 / 28.6 | 
| Headset version: | Upper part | 
| Headset stack height: | 15mm | 
| Model year: | 2023 | 
| Collection: | Full year | 
| Color: | Black | 
| Weight: | 53g | 
| Manufacturer item code: | BAA0079K | 
| Manufacturer page: | http://www.canecreek.com/ |