Originally Posted by TwoHeadsBrewing

Typically a 16# CF/Ti bike is going to cost you upwards of $1,800 but will come with better, lighter components. The hubs, BB, crankset, deraillers will operate more smoothly and result in less drag and greater efficiency. In addition a stiffer BB and frame in general is going to help more of your energy output get to the rear wheel. If you were to get on a 16# CF bike and ride 5 miles, then do it again with a 5# weight it would make almost no difference because the components are the same. But often with a more expensive bike you're not only talking about weight, but quality of parts, frame stiffness and overall design.