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These lower headset cup extenders allow you to adjust the geometry of your bike frame by increasing the effective fork length by 10mm. They allow you to do things like use a rigid fork on a suspension-corrected frame or use a fork with a shorter axle-to-crown height rather than what the frame was designed to use. They can also be used to increase the bottom bracket height and lower the headtube angle.

Wolf Tooth Precision Headsets are machined in the USA out of aircraft-grade aluminum with superior sealing for protection against the elements. These ZS headsets are for frames with internal bearing cups that are pressed into the frame.

Compatibility

  • Any frame that uses a zero stack headset with a 56mm lower head tube inner diameter
  • Upper and lowers headsets sold separately 
  • Enduro stainless steel sealed bearings included

 

    Lower assembly features:

    Recommendations

    The Wolf Tooth crown race installation adapter will help avoid damaging the crown race seals

    Related Products

    Tech Specs

    Weight: 62g
    Material: 6061 aluminum cup, stainless steel bearing

    Made in the USA

      WARNING Handling this product will expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For further information go to www.P65Warnings.ca.gov.​

    Patent and trademark information