Specialized have been saying it for yearssmoother is faster with the all new s works roubaix this philosophy is taken to new remarkable heights the frame is the lightest that they ever produced and its been constructed from fact 11r carbon fibre its stiffness levels are also off the charts and compared to the sl4 iteration of yesteryear youll experience a whole new faster and more efficient geometry through some engineering sorcery specialized have managed to keep the same fit fee