When only pure absolute performance is demanded the best riders in the world choose the s works tarmac thats because it features an impeccable s works fact 11r carbon fiber construction thats unbelievably light stiff and reactive in other words its purpose built to be a true all round race bike which is no accident in fact it comes as a result of our rider first engineered design that applies specificity to every tube size and carbon layup for every frame size this creates the op