34mm to 30mm Headtube Reducer

Reduces head tube inner diameter from 1.340" (33.95mm) to 1.186" (30.1mm) , allowing for use of smaller headset cups.

  • Outer Cup Diameter: 1.340"
  • Inner Diameter: 1.186"
  • Cup Insert Depth: 0.365"
  • Cup Lip Thickness: 0.050"
  • CNC machined aluminum
  • Black anodized finish
  • 2 pieces per bag


Note: Measure your existing headset cups and inner diameter of frame's headtube for exact fit before ordering.

Precision Machined


MSRP $35.00
In stock

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