This is the first seatpost that's compliant and aerodynamic. It was initially developed for the all-new Roubaix and makes a fantastic addition to your Tarmac SL6. The seatpost is designed to make fine-tuning your saddle position a breeze with a single-bolt adjustable head and two setback options. It features FACT carbon construction paired with a D-shaped design that's compatible with the 2020 Roubaix, Tarmac SL6, and Roubaix SL8. The seatpost is engineered to have the saddle move in a perfect arc, with a back and downward motion. The cylindrical aluminum head assembly adjusts fore/aft and tilt with a single bolt.