I've got some new forks for my Pinnacle Ramin, and I want to replace the headset when I fit the forks. It's the first time I've tried to buy a new headset in over 30 years, and I was expecting it to be a straightforward process. It turns out it's not. I took it to my LBS to see if they had one in stock, but they said that they'd have to take it apart to find out which one I need. There are no external markings, but I just wanted to buy a headset and fit it myself rather than have the work done at the bike shop.

Does anyone know what size headset I should buy?

Cheers, Michael.

https://singletrackworld.com/forum/bike ... ed-please/

Not sure if this is any use?

Thanks Keith. I saw that too but it still didn't seem very certain. I've relented and finally taken the bike to the LBC.

Tapered or straight fork steerer? Either way it's a common headset type. The head tube is 44mm ID so it takes a ZS44 28.6 upper, with either a ZC44 30 lower for a straight steerer or EC44 40 for a tapered steerer. Hope, FSA etc all jhave them. Hopefully the shop have one.

jameso wrote: ↑Fri Apr 11, 2025 8:08 am Tapered or straight fork steerer? Either way it's a common headset type. The head tube is 44mm ID so it takes a ZS44 28.6 upper, with either a ZC44 30 lower for a straight steerer or EC44 40 for a tapered steerer. Hope, FSA etc all jhave them. Hopefully the shop have one.

Thanks very much

If only all bike standards and general parts queries came back with such clear, precise information!!

jameso wrote: ↑Fri Apr 11, 2025 8:08 am Tapered or straight fork steerer? Either way it's a common headset type. The head tube is 44mm ID so it takes a ZS44 28.6 upper, with either a ZS44 30 lower for a straight steerer or EC44 40 for a tapered steerer. Hope, FSA etc all jhave them. Hopefully the shop have one.

Sorry, typo there - the lower for straight steerer would be a ZS, not 'ZC'. Zero Stack aka semi-integrated (you spoke too soon Ben )