How to cut a steerer tube and install a star nut

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.

About the author

RL Policar is an avid mountain biker and the Editor In-Chief of and Between the two sites, he's published well over 4,000 articles (and growing).