Wolf Tooth Performance Headset - ZS44/28.6 Upper 6mm Stack Raw Silver. Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings balancing quality and price.

Black Oxide Bearings are made from chromium steel for high load capacity durability and corrision resistance

Ultralight stem cap with integrated spacer plus an aluminum bolt and a star nut

O-ring seal prevents water intrusion around the steerer tube

Custom-molded upper lip seal provides additional protection for upper bearing