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Thanks @clubman
Thanks @clubman
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SideshowBob
A note on headsets
Almost invariably it's the bottom end of a headset that gets worn (the races become pitted), so
that's all you need to replace. As long as the races fit the frame and fork crown they'll be fine, but nobody will know or care what make they are.
As for the top end, it's best to use a spacer which fits the locking arrangement on the steerer thread- this is normally either a little 'spur' on the ring which fits into a milled slot in the steerer, or the steerer has a flat which fits a corresponding 'chord' on the washer. The locking system makes the critical adjustment of the head bearing easier and so, if you really do have to change the top bearing it's best to retain the original spacer.