This replacement seatpost is designed specifically for the Tarmac SL7 and ensures the perfect fit with two different setback options-0mm and 20mm. The post features FACT carbon construction and an aerodynamic profile optimized for the 2021 Tarmac SL7. It includes sleek Di2 integration that hides the Di2 junction box inside the post. The cylindrical aluminum head assembly allows for fore-aft and tilt adjustments with an easy-access single bolt for quick and convenient positioning.