Cannondale CAAD8 Optio frame with CF fork, Cannondale Hollowgram Si crank/bb, Mavic Ksyrium SL wheels with Hutchinson Fusion Comp 23c tires, USE Alien CF seat post, Fi'zi:k Aliante Carbon Team Edition saddle. full Campy Record CF/titanium group, Cinelli RAM CF integrated stem and handlebar with Checkpoint computer mount, Cateye 7 wireless computer, Time RSX Ti pedals, and Campy Record waterbottle holder = 15.62 lbs or 7.1 kg using calibrated digital scale at LBS
Specialized Sirrus Pro, CF flat bar; Shimano Ultegra derallers, Alex AT400 wheels with 28c Specialized Armadillo tires, Specialized Body Geometry Milano seat, Specialized cranks and bb, Shimano spd pedals, Shimano hydralic disc brakes, fake CF water bottle holder, rear 5 LED light with mount, Cateye 7 wireless computer = 23.4 lbs or 10.6 kg using calibrated digital scale at LBS.
Old single wall steel KHS hard tail mountain bike with various steel pieces lightend by corrosion except "alloy" kickstand, rear 5 LED light with mount, Cateye LED front light, Cateye 7 wireless computer, generic waterbottle holders, seat pack = 40 pounds or 18.2 kg using my bathroon scale.