Specialized Tarmac SL9 S-level - Shimano Dura-Ace Di2 The Tarmac SL9 S-Level was born from the fastest road bike Specialized has ever made, but its performance goes far beyond simply being lightweight or aerodynamic. Rather than focusing solely on static wind-tunnel figures, Specialized has developed the Tarmac SL9 around unpredictable, real-world racing conditions. From blustery headwinds and rolling terrain to technical descents and decisive attacks, its performance has been validated on real courses with real riders. The result is a road race bike designed to deliver one thing that matters most on race day: the lowest possible Time to Finish. Race-Bred Speed and Handling Built around a FACT 10r Carbon frame, the Tarmac SL9 S-Level combines low weight, aerodynamic efficiency and precise handling without compromising one for another. The Roval Rapide CL III carbon wheels complement the frame with an aero-focused profile designed to carry speed efficiently, while the Roval Rapide Integrated Cockpit creates a clean, streamlined front end. Together, these features give the Tarmac the speed to attack and the confidence to carry momentum through corners, descents and fast, technical sections of road. Shimano Dura-Ace Di2 Precision At the heart of this premium race build is Shimano Dura-Ace Di2, delivering exceptionally fast, precise electronic shifting at the touch of a button. Every gear change is designed to be crisp and dependable, allowing you to concentrate on your line, your effort and the riders around you rather than your drivetrain. Combined with the Tarmac SL9 S-Level's race-focused chassis and high-performance Roval components, it creates a complete road racing package for cyclists who are serious about turning every watt into forward momentum.