The Classic Headset is the reliable workhorse of the Ritchey headset range. Available with the timeless high-polish finish, this smooth and reliable specimen features lightweight, precision-machined aluminum construction, sealed cartridge bearings, and comes packed with Ritchey Grease. A sealed design promises minimal penetration from the elements. The Classic Headset adds that classy and reliable detail your bike deserves. External, precision-machined aluminum cups Sealed cartridge 45/45-degree bearings, Ti coated Stack height 28.3mm Upper, semi-integrated headset designed for bicycles with press-fit frames Stainless steel angular contact cartridge bearings Upper HT OD/ID: 50/44mmUpper, drop-in style integrated headsetStainless steel angular contact Ceramic Hybrid Cartridge (ACB) - Ti CoatedUpper HT OD/ID: 50/44mmLower HT OD/ID: 50/44Stack Height: 12.5 mm