Montague Octagon Steerer Tube Extenders

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sku: GM081820-100

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Montague Octagon Steerer Tube Extenders


  • Fast, easy handlebar height adjustment without tools
  • Octagonal shape keeps steering engaged while raising and lowering the stem
  • Automatically maintains minimum insertion
  • Clamps to top of steerer, original stem clamps to top of Octagon device
  • For 1-1/8" threadless steel steerers
  • Must be installed by a professional bicycle mechanic
  • Available in Medium or Long versions
  • Color: Black
  • Steerer Size: 1-1/8"
  • Stem Size: 1-1/8"