Road frames have come a long way in recent years with new technology and materials available. Carbon fibre, aluminium and titanium are all used now as well as the more traditional steel tubesets. They all have their advantages: Aluminium offers good performance at a reasonable price, titanium offers ultimate performance at a premium price while carbon fibre offers superb comfort and performance at intermediate cost. It is not uncommon for the materials to be mixed to give the benefits of all the materials in one frame - a carbon fibre rear end on an aluminium frame, for example.