• Will this fit any bike? The extender can be fitted to bikes with a 1 ⅛" external diameter steerer tube. This includes many modern track, road and mountain bikes.
  
  Every steerer tube can be have different internal dimensions - especially carbon ones where the internal dimensions are variable. We have designed the extender to have a tighter tolerance fit into most steerer tubes than your standard headset expansion plug for safety and security. Prior to purchasing, measure the inside diameter of your steerer tube. If it measures any smaller than 22.50mm, you may need to sand some material out. This intersection zone between the steerer tube and extender is only 3mm deep, so not very much material will need to be removed from the inner edge of your steerer tube. If in doubt, ask your local bike shop for assistance.
  
• Is it strong? Yes, This type of expansion plug system is common for steerer tube and headset assemblies. We have opted for a longer 50mm knurled plug for the extra security and stiffness. Most headset plugs are around 30mm. we recommend the extender to be epoxy bonded into the steerer for best security.
  
  
• What epoxy do use for install?
  A medium/high strength two part epoxy from a hardware store is suitable. Smear a few dabs on each of the three aluminium knurled surfaces before install. This increases the surface friction between the extender and the steerer tube.
  
  
• How do I remove it - if its glued in?
  If it's required to remove the extender in the future, use the epoxy sparingly. Disassemble the extender, then each of the three blocks can be knocked out without damaging the carbon within the steerer tube.
  
  
• Can you make the extension longer than 18mm? In theory yes it is possible to make them longer, however, for safety reasons we have set the maximum height at 18mm. We suggest you have at least half of your stem clamping around your original steerer tube. 

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