The Xenon carbon comp post, is that a light post at 227gm?
if you’re thinking of it for your Ritchey then
1) DON’T, put a proper Ritchey post on it
2) many carbon posts are surprisingly heavy
I bought a Fizik Cyrano from CRC, lovely looking bit of kit but seemed to have used an old anvil for the head and weighed ~250grms, the same as the cheap OE ally post it was going to replace.
I think the justification for CF posts is flex/vibration damping rather than weight loss.
My Chinese “Bontrager” carbon post is ~180grms and cost £18 from Aliexpress, got it more as an experiment into the quality of cheap Chinese carbon but it is one of the lightest posts I’ve handled (ooer missus more tea vicar etc) and is a perfect cosmetic match for my frame.
If it is for the Ritchey what diameter do you need, I’ve got a Ritchey carbon post bought off here ages ago which is surplus to requirements – pretty sure its 31.6 which might be too big?