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Measure the external diameter of the steerer. This should be either 1" (25.4mm) or 1 1/8" (28.6mm). This is not the sole determinant of star-nut size, as a variety of materials may be used for the steerer tube, each requiring a different wall thickness. As your internal diameter is at least 24.26mm, this would mean a maximum wall thickness of 0.57mm for a ...


If your headset has recently been replaced, then you should check its adjustment occasionally. Newly fitted bearing races can settle slightly into the head tube and the fork crown, particularly if you ride over a rough or bumpy surface. Adjust to be as loose as possible without any play or knocking when you do the check that Daniel R Hicks describes here.


To check your headset, sit on the bike, lock the front brakes, and push forward/backward with your feet. If you can see any looseness in the headset it needs to be tightened. Since it's so easy to check one should check a few times a year. But no real "schedule" is needed. I've seen headsets that were remarkably loose. Though looseness affects handling to ...


There are a few factors to choosing a headset, primarily frame related: Does the frame require a threaded (1") or threadless head set? What is the headtube/ steerer type (1.5 straight, tapered, 1 1/8 straight) Is the headset integrated (cups sit within the frame)? Deciding if a fork will fit is a bit easier, is the steerer the correct length (it can be ...

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