Wolf Tooth Performance ZS Headsets - Zero Stack Lower


This is only the Lower bearing cup, You also need the Upper cup for a complete headset

  • 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. 


    • 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 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.


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

    Related Products

    • Precision headset spacers
    • Wolf Tooth crown race installation adapter
    • Premium ZS Headsets

    Tech Specs

    Weight: 55-58g
    Material: 6061 aluminum

    Made in the USA

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