Hello I have a complete Simano XTR M901 1 inch treaded headset availible.
Have owned since new ! was keepimg back in case I rebuilt one of my own 1 inch frames…but also have Chris King so if it helps you with build here you go… - the prices on eBay are crazy high!
As you will see crown race as wear , as you’d expect.
Offered at price (following forum rules) ££52.95 posted ( 2nd class Royal Mail)
Lots of images online here so you can asses condition for yourself.
Link to Flickr album XTR M901 headset
View attachment 853250
ps price is for complete h’set boxed , used condition