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Wolf Tooth headsets are machined here in our Minnesota shop with aircraft-grade 6061 aluminum. They are designed to
be lightweight, strong, and durable. 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. Premium Headsets with Enduro stainless
steel bearings have a lifetime warranty.
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 stainless 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.
6, 15 and 25 mm stack height top cover options (6mm cover = 6mm total stack, 15mm cover = 15 total stack, 25mm
cover = 25mm 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 damaging the crown race seals.
Related Products
Precision headset spacers
Wolf Tooth crown race
installation adapter
Performance
ZS Headset
Tech Specs
Weight: 55-58gMaterial: 6061 aluminum
Stem Cap Bolt Torque Spec: 2-3 Nm with light
grease on threads only
Made in the USA
Patent and
trademark information
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