I`ve installed my new Zipp bars on my bike. weight came in at 816g for size s with stemlenght spacer and without extensions
I liked all the ajustment options over my old 3T Mistral and think that this fits me better especially for my once a year 120km tt
The 3T brakes did not fit well on the basebar they were too big in diameter and the shimano shifters were tight but no problem.
The Garmin Edge 800 cannot turn between the extensions to remove from its Zipp holder, Maybe my Edge 500 does.
The armpads are not as low as my old 3t Mistral but lowered the whole basebar by removing the FSA headset spacer for the slam that stem spacer.