When only pure, absolute performance is demanded, the best riders in the world choose the S-Works Tarmac. That's because it features an impeccable S-Works FACT 11r carbon fiber construction that's unbelievably light, stiff, and reactive. In other words, it's 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 Engineeredâ¢ design that applies specificity to every tube size and carbon layup for every frame size. This creates the optimal balance of rigidity, weight, and responsiveness, so every frame, regardless of size, performs just as we intended. And if you need proof, just look at the Tarmac's trophy case, with wins in every Grand Tour and the last two World Championships. And with the S-Works Tarmac Frameset, you can start building up your dream bike exactly how you've always wanted it.