Ideal headset choice for any bike where weight savings is a priority without compromising durability or performance Internally contoured and relieved 6061T6 aluminum for minimized weight and maximized strength Lowfriction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover with no loose parts. Lightweight aluminum with steel hybrid Hellbender Lite sealed cartridge bearing Alloy dualseal crown race provides excellent seal efficiency with low friction Carbon friendly compression ring