The Trek Emondo is the lightest production bike available to buy presently. At 4.5 kilograms it is well under the UCI weight limit of 6.8 kilograms.
At its 16000 dollar price, it makes me start to wonder is the weight loss worth it. It is only about 4 kilograms lighter than your average 2000 dollar road bike.
Add two water bottles along with some food, gels, spare tubes and a pump and the weight is already getting quite close to a less expensive 2000 dollar bike.
Most people could easily lose 4 kilograms of weight from our bodies if not more unless of course you are as slim as Contador out Froome.
This raises the question whether it is worth spending an extra 14000 dollars to lose 4 kilograms of weight.
For the majority of people I would advise them to lose weight from their body initially.