The One is unusual in that its most distinctive feature—the Twin Vane Split Downtube—was created in order to improve the bike’s stiffness and ride quality, not its aerodynamics. Even so, we know that smaller structures create less turbulence because they disturb the airflow less, so the Twin Vane Split Downtube gives the air coming off the front wheel more options for smooth flow. The benefit is tangible and we’ve measured the benefit of the Twin Vane Split Downtube to be 100g at 25 mph when compared to a traditional down tube design.
More details on the Factor One frameset.
