Description

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 6061 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:

  • Custom molded dual lip seal on the crown race to protect lower bearing in the toughest conditions
  • 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

    • Tech Specs

      Weight: 62g
      Material: 6061 aluminum cup, stainless steel
      bearing
      Includes: Cup, bearing, and race

      Made in the USA

      Patent and trademark
      information

  Additional information

  Fitment	ZS56/40 Lower Headset Extended 10mm
  S.H.I.S. Designation	ZS56
  Color	Black

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