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 fitment 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. 
Complete headset for 1 1/8" forks. 
The name 40.EC34 describes the 1 1/8" Ahead headset with external cups. The S.H.I.S. denotation (see attachment) is EC34/28.6 | EC34/30.
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.EC34 Complete Headset 1 1/8 Inches - EC34/28.6 | EC34/30 | 
| Manufacturer: | Cane Creek | 
| Item code: | CCR160907 | 
| Activity: | Cycling | 
| Usage bikesport: | Road Bike, MTB | 
| Steerer tube ø: | 1 1/8" straight ahead | 
| S.h.i.s.: | External Cup (EC) | 
| S.h.i.s. top: | EC34 / 28.6 | 
| S.h.i.s. bottom: | EC34 / 30 | 
| Headset version: | complete | 
| Headset stack height: | 28mm | 
| Model year: | 2023 | 
| Collection: | Full year | 
| Color: | Black | 
| Weight: | 89g | 
| Manufacturer item code: | BAA0068K | 
| Manufacturer page: | http://www.canecreek.com/ |