You know those mysterious two holes in a Cervelo or QR PRsix seatpost? Well, this high-quality aluminum Carrier will fit right in there.
When installed in the high position, air flows cleanly around the aero seat post. The narrow 5/8" SONIC WING chassis has an open back allowing air to exit, saving 13 seconds per 40 kilometers when in the high position.
30 different positions are available for both comfort and aerodynamics. 3 different carrier angles and 5 different bottle angles in each position!