BBB Steerer Adapter 1 1/8″ Quill to Threadless 1 1/8″


  • Designed to extend the fork post by up to 8.5 cm
  • Adapter that enables you to make your steering tube longer without affecting the ahead system
  • Threaded and threadless headset compatible
  • Sandblasted black BBB Round Head included
  • Size: 28.6mm (1 1/8″)
  • Length: 18.5cm
  • Bottom/Quill Diameter: 28.6mm (1 1/8″) 
  • Top/Stem diameter: 28.6 mm (1 1/8″) 
  • Note this is definitely for a 1 1/8″ threaded headset (not 1″). They existed for a bit on MTBs in the 1990s.
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This product is: A regular item

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Reviews & Discussion (1)

Reviews & Questions

What others are saying

  1. Question


    Is this a 1″ to 1-1/8″ quill converter? The item title says not, but the product image looks like it is. Thanks

    (0) (0)

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