i built my IRO group buy up with weight in mind, but not necessarily at the top of my list of priorities.

the stock fork alone (which i never put on) weighs more than the frame by itself, so i put a carbon fork on it when i built it up. for only 50 bucks, why wouldn't i?

i also have a carbon brake lever and suzue promax carbon hubs, but--i'm not gonna lie--those were mostly for aesthetics. any weight savings there were just fringe benefit.

weight also played a role in my rim choice--i went with open pros because i knew they'd be light and strong. also because they are not velocity deep v's which was also a major factor.

i havent weighed the bike but it's remarkably light. that is, people lift it and remark on how light it is.

it makes climbing noticeably easier than it was on my panasonic conversion i had prior to this build.