BMAN:Buddy, you know I am kidding about it being heavy. It takes a lot of work to get a true aero bike under 13 lbs. You also know that I look at the build and see potential to get you even lower.
I know. Before we became acquainted through the internet. I used to watch your threads, and your progress and I was just in awe at your sub 13lbs build. Not to mention I love your paint job. Once I knew sub 13lbs was possible, it was kinda the goal in the back of my head. It's taken me a year to drop 1/4lbs because other things changed, and some parts got heavier. As you know, I also broke my original frame, and this current one is actually a replacement for it. There is always potential to go lighter. I'm still kicking around the TriRig brake idea, or possibly the Scapula F Aero. I know your thoughts on this, but if I went with the Scapula it would keep it different from your bike, as well as a bunch lighter! :D
nismosr: which part of the bike give most of the weight off ? I have an 09 S2 myself and I'll be happy to put her under 15lbs.
It depends on what components you have. A good set of tubular wheels always does wonders. Cranks can be quite heavy too, and good gains can be made there too. This Lightning crank saved me over 1/4lb over my old Red crank. Saddles are huge too. I had a pretty light 134g SLR Kit Carbonio Flow previous to this Berk Combo, and I tuned my old post down to 156g. This new setup blew that out of the water at 181g complete post/saddle combo. If you have a heavier saddle you could save close to a half pound by switching. Also contrary to the look, these combos are comfortable. :) I hope that helps.