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How to cut a steerer tube and install a star nut

Posted by RL Policar On May - 26 - 2011

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I’ve received a few requests from our readers asking how to cut a steerer tube and install a star nut. Unfortunately, I haven’t been able to get this video together until now. I realized that I had an old fork that I could use for the video and I decided to go for it.

For starters, you’ll need one of these, it’s a pipe cutter. You can find them at any hardware store for about $15. To install a star nut, you’ll need a special tool that can be purchased from It normally sells for $15, but right now they are on sale for $11.98.

Make sure you watch the video and learn how to do this yourself because a shop could charge you as much as $75 to cut the steerer, install a star nut and install the fork.

6 Responses to “How to cut a steerer tube and install a star nut”

  1. Cat MacKinnon says:

    this would’ve been way funnier if a gigantic-ass caterpillar came out of the steerer tube at some point! ;)

  2. RL Policar says:

    No Cat, that would not be funny…. :)

  3. [...] out to see how easy it is to cut a steerer tube and install a star nut. AKPC_IDS += "5555,";Popularity: unranked [?] Bookmark It Hide [...]

  4. Ghost Rider says:

    A lot of times, the pipe cutter will create a deformation “lip” on both the inside and outside of the cut area on the steerer. I always dress that lip with a file so that the stem and headset spacers slide on smoothly. It takes an extra five minutes, but is worth it.

  5. Ghost Rider says:

    Oh, and NEVER cut a carbon steerer with a pipe cutter…that’s asking for trouble.

  6. elmonica says:

    Oh, so that is how it is done. My problem was I wasn’t turning it. Used a hacksaw instead.

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