Acros AZ-49 R1 Headset Upper ZS49/28.6


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Zerostack construction forms are widely used through their advantages, of a low overall height and bearing shells.


  • Stainless – Industry – Angular contact ball bearings, double sealed
  • CNC – made in Germany / Al2000 series
  • R3 seal (metal sheet supported rubber seal)

Technical Specifications:

  • Fork steerer:28,6/1 1/8″
  • Cup skirt Ø: 49mm
  • Cup skirt length: 15mm
  • Total stack high: 8,5mm
  • Weight: 48g

Occasionally, without notice, manufacturers change product design and/or specifications.

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  1. by Khloe Benitez (verified owner)

    Great website, accurate and detailed info