Every element of the OSTRO is optimised for aerodynamics. The mid-chord aero profile tube shapes, the wide stance fork featuring our pioneering Reversing Flow Energising Channel, and the aero cockpit with fully integrated cabling. The net result is a superlight bike that is close to the aero performance of the ONE and ready to blitz the fastest road races.
The tube profiles are derived from NACA (National Advisory Committee on Aeronautics, the godfathers of aero) shapes, oriented along the waterline (horizontal) in line with airflow and optimised for ride quality and aero-to-weight balance by truncating the aero section aggressively.
As well as being lighter, stiffer and more compliant, these truncated aero sections also reduce drag in crosswinds and better accommodate bottles on the bike. In designing the OSTRO, Factor considered every aspect of the frame and applied the optimum aero profile, with particular regard to the transitions between frame sections (eg down tube to seat tube, fork and head tube to down tube) and to performance across a full range of effective wind angles.
The Factor OSTRO is named after one of the eight principal winds of the Mediterranean Sea. OSTRO is a southerly wind that sweeps through the Côte d’Azur. Of particular relevance this year, the OSTRO wind can blow through Nice, the Grand Départ of the 2020 Tour de France, where the riders required exceptional aerodynamic performance to negotiate the crosswinds on the fast coast roads as well as the climbing response of a super-lightweight machine for the surrounding climbs; the Factor OSTRO was created for exactly such mixed riding.
Wide stance fork for better Aerodynamics
Full Integration with one pice cock pit and integrated cables
Optimised for Electronic shifting
Threaded bottom bracket