Wolf Tooth Performance ZS Headsets - Zero Stack, Upper / ZS44/28.6 6mm Stack /

Wolf Tooth headsets are machined here in our Minnesota shop with aircraft-grade 6061 aluminum. They are designed to be lightweight, strong, and durable. Performance Headsets with Enduro black oxide bearings have a one-year warranty. Our headsets have three levels of industry-leading custom sealing to protect bearings from the elements and prolong the life of the headset. Available in a variety of colors. These ZS headsets are for frames with internal bearing cups that are pressed into the frame. 

Compatibility

• Any frame that uses ZS (Zero Stack) headsets with 44mm upper and 56mm lower head tube inner diameter.
• Uppers and lowers sold separately.
• Enduro black oxide steel sealed bearings included on both the upper and lower. 
• Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately). (Never use a star nut on a carbon steerer tube).

Upper assembly features:

• Ultralight stem cap with integrated spacer plus an aluminum bolt and a star nut.
• 6mm top cover = 6mm total stack.
• O-ring seal prevents water intrusion around steerer tube.
• Custom-molded upper lip seal provides additional protection for upper bearing.

Lower assembly features:

• Custom-molded dual-lip seal on the crown race protects lower bearing in the toughest conditions.
• All components precision machined in-house at Wolf Tooth from aircraft grade aluminum to ensure the highest level of quality.
• Service and additional parts available.

Recommendations

The Wolf Tooth crown race installation adapter will help avoid damage to crown race seals.

Tech Specs

Weight: 55-58g
Material: 6061 aluminum
Bevel Angle: 36 x 45 degrees
Stem Cap Bolt Torque Spec: 2-3 Nm with light grease on threads only

Made in the USA