Do you know any 'rideable' bicycle frames that are lighter than Ghisallo from Litespeed? I am sure someone makes it but couldn't find it on internet. I need a hard evidence to back it up. Let me know if you have heard of it.
Though I was looking for something lighter. Something that it's not practical to ride but rideable. More of a 600-700g frames. Maybe it's impossible. But if you have heard of something like that, let me know.