The S-Works Tarmac is the ideal modern road bike. It’s light enough to be a ferocious climber, and the Tarmac SL6 got an aero redesign to make it fast on the flats too. This build has a power meter to help you make your goals reality and figure out exactly how much power you can really put through the ENVE carbon wheels. Specialized’s high-end FACT carbon frame is built up with a Shimano Dura-Ace Di2 groupset and weighs just 15 pounds 2 ounces. The Tarmac is aero and light, fast and easy to handle, and Peter Sagan won two of his three World Championships on it. If you aren’t going fast on this, it’s not the bike’s fault.