Factor Ostro Gravel - kit frame

The Factor Ostro Gravel bike has been designed to be a speed gravel bike. Every ride, whatever the surface, it's faster that counts, and this is the gravel bike you've been waiting for.

The OSTRO Gravel Bike takes its "win everywhere" mentality from its stablemate, the OSTRO VAM, and is also developed to dominate its category with incredible aerodynamics, superior handling, high stiffness and low weight. With a 45mm tire capacity, it's ready to go anywhere, fast.

Gravel racing is fast and aerodynamics really matters, but it's not as fast as road racing so the requirements are different. The OSTRO Gravel frame is carefully optimized for the speeds you'll be riding at. Our team used a 'zoned aero' strategy that focused the front of the bike on aerodynamics because it meets clean or free airflow, and the rear of the bike on lightness, where airflow is too chaotic and ride quality is top priority.

In particular, much time was spent on the head tube, where an all-new tube shape unlocked significant drag reductions by manipulating the "laminar gap bubble" that occurs near the front of the airfoils at lower speeds. .

The technology has its roots in the aerospace industry, but all you really need to know is that OSTRO Gravel will get you to your finish line faster and in minutes, not seconds.

Factor Ostro Gravel offers generous clearance for 45mm tires on both 700c and 650b, giving you the options and possibilities to tackle the toughest routes and events. This is a true figure, with 4mm of clearance on each side according to ISO standards, so the OSTRO Gravel is super capable in muddy conditions.

That was proven in the queen of gravel racing, the 2022 Unbound 200, where heavy rain made the course brutal and the OSTRO Gravel cracked the top 10.