Forty, Setting the Standard
Featuring a full alloy construction – sealed cartridge bearings, 6000 series alloy cups and materials, and a sealed steel crown race, the Forty series headset sets the standard for all other headsets to be judged.
Features
ZN40 Bearings – The ZN40 bearings are corrosion-resistant zinc-coated, machined steel cartridge bearings with hardened steel balls, which vastly increases the longevity of the 40 series headsets.

Interlok Spacer Compatible – Cane Creek’s patented Interlok spacer design provides solid interface between the top cover and spacer stack, meaning they “nest” together and into the top of the bearing cover, which helps minimize shifting under load while riding; and shave 25% in weight off a standard alloy spacer stack.

Specifications
| Cups and Covers | 6061 T-6 Aluminum Internally relieved to reduce weight |
|---|---|
| Covers | Tall and short aluminum and carbon covers offered on many IS and ZS models |
| Crown Race | Durable steel crown races |
| Bearings | Dependable zinc coated, sealed bearings EC30 will take a 38mm bearing Note: All complete Cane Creek headset assemblies (top or bottom) will use a 36×45 degree contact angle bearing, with the exception of their IS47/33 and EC44/33 headset assemblies. IS47/33 and EC44/33 will use a 45×45 degree contact angle bearing. |
| Clip Seal | Innovative Clip-Seal completely seals the top assembly and captures the compression ring to reduce the number of loose parts |
| Face Seal | High-quality, low friction face seals on the crown races |
| Stack Heights | External Cup (EC) — 16mm top, 12mm bottom, |








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