Wolf Tooth ZS Headset

ZS44 refers to the Zero Stack standard with a 44mm head tube inner diameter. This means the headset cups press into the frame, keeping the stack height low and the profile clean.

This headset is designed for frames with a 44mm head tube inner diameter and a standard 1.125-inch straight steerer tube. Please verify your frame's head tube specifications before purchasing to ensure compatibility.

It is built specifically for harsh environments. It features stainless steel bearings for corrosion resistance, plus a custom-molded upper lip seal and an O-ring seal that work together to keep water and debris out of the bearing assembly.

Yes, it comes as a complete kit. You will receive the upper headset assembly, an ultralight stem cap, an integrated spacer, an aluminum bolt, and a star nut.

The stack height is 6 mm. This is a relatively low-profile design, which helps keep your front end height consistent if you are replacing a similar zero-stack headset.