Need Help – Lowest Stack Height on a ZS Headset

I want to buy a nicolai helius frame the new frames have a zero stack headset.
The lefty I want to run has a gap of 137mm
The Headtube length is 130mm
Therefore the lower the headstack I can find the easier the job is going to be.

Can you please help me to find a ZS headset with a minimal stack height.

Thanks

Ash

Speak to Simon@nicolai uk and ask him to get a Reset racing headset fitted(From factory),think they have a 3mm stackheight.

leftys dont have an intergrated stem these days do they ?

the figures suggest your onto a non starter before you even fit a headset !

You could have your new frame Specced with a Cannondale lefty Headtube.Might be worth the extra money to save the hassle.

From what I have heard it may be possible to shave some height off the top of the headtube. therefore in the future normal forks could be used.

Thanks nicolaisam great news about the headset at least I’ve got a chance of using the carbon lefty I have. The lefty cant wait to be seen on a Nicolai. I just hope Nicolai can shave a few mm off the top of the head tube.

4 mm to get stem on ?

No trailrat the space between the two fixed brackets on the lefty has a gap of 137mm
The headtube length on a Nicolai helius AC is 130mm so if Simon is right at Nicolai uk and Nicolai can shave at least 5mm off the top of the head tube I should be able fit a one for all lefty 1 1/8 steerer tube and also a spacer to take up the slack of the headset.