This is the economy build. It yields a light bike that won't drain your pocket:
Weight of this build with a 54.5CM frame is 15 pounds 2 ounces without seat and pedals.
Hanspeed RS838 Frame & Fork with Neco Headset.
Hanspeed Buddha Wing 3K Carbon Fiber 42CM Ergo Handlebar.
Hanspeed Buddha Zen 3K Carbon Fiber Seat Post.
Hanspeed Buddha Quench 3K Carbon Fiber Water Bottle Cages.
Hanspeed Ultra Carbon 700C 50mm 3K Carbon Fiber Matte Clincher Wheel Set.
Microshift Arsis Carbon 10 speed Group Set, Brifters & Cables.
Shimano 105 Rear Cassette.
SRAM Power Chain II PC1051.
FSA SL-K Pro Crank Set.
Cane Creak SR-3 Brake Set.
FSA SL-K Stem.
Michelin Pro Race 3 Tires.
Cinelli Cork Handlebar Tape.
For the above including assembly $3499.95
Seat and pedals are really personal preference.
We can help you select these items, but they are not included.
We can build up with any components you want.
To name a few:
2012 SRAM RED or RED/BLACK (add $1000).
2012 SHIMANO DURA-ACE 7900 (add $1100).
2012 CAMPAGNOLO SUPER RECORD (add $1700).