WOLF TOOTH EC34/28. 6 UPPER HEADSETThere is nothing quite like the smoothness of a precision headset. Luckily Wolf Tooth components makes a precision headset that is machined in the USA out of aircraft grade aluminum with superior sealing, protecting the bearings from the elements. They are available in a huge variety of colors, so you can add some style to your bike. Included is an Enduro sealed stainless steel bearing that keeps turning smooth for miles and miles. Upper cup headset top covers are available in 5, 15, and 25mm stack heights for a clean, no spacer look. Includes the Wolf Tooth signature 5mm stem cap. Features Custom molded upper lip seal provides additional protection for upper bearing. O-ring steerer tube seal to prevent water intrusion. Enduro sealed bearing for smooth operation. Specifications Technical Description EC34/28. 6Top Stack Height5, 15, 25mm Top Bearing Type Enduro sealed Material Aircraft grade aluminum Weighttbd | Wolf Tooth Components | Ec34/28. 6 Upper Headset | Blue | - Ec34/28. 6 Upper 25Mm Stack