There are a number of jobs around your bike that are really best left to professionals. Fitting a headset is one of them. It's a job that, done properly, involves all sorts of specialist (and expensive) tools. With the right tools it's dead quick and easy. Without them it's a bit awkward with a high risk of permanently damaging something.

Despite which, we're going to show you how to do it without the right tools. Partially in the hope that it'll act as a warning not to, partially because, well, if you're going to do it you might as well do it right. OK, not right as such, but at least minimally wrong. If you've got an expensive lightweight frame and/or an expensive lightweight headset, then stop now. It's not guaranteed to work even with suitably robust tackle - if anything looks like going wrong, bail out before it gets terminal...

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