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WCS External Cup EC Lower Headset



Genuine Ritchey Lower Headset External Cup EC with Titanium-coated sealed cartridge bearing. Fits bicycles with 44mm inner diameter headtubes that require external headset cups.

Tech Specs

Material - lower cup and crown racealloy
Stack Height13mm (EC44/33) – 14.3mm (EC44/40)
Headtube ID44mm
S.H.I.S.EC44/33 (1 ¼”) – EC44/40 (1.5”)
EC44/33 (1 ¼”) bearing46.0/34.1/7mm 45°/45° - sealed cartridge (ACB) – titanium coated
EC44/40 (1.5”) bearing51.9/40.0/8mm 45°/45° - sealed cartridge (ACB) – titanium coated
Weight61g (EC44/33) – 69g (EC44/40)

Tech Drawing

  • Design
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