A simple method to reduce aerodynamic drag is to remove or hide objects from the wind. In some cases a brake can be completely integrated into the frame structure as if it doesn’t exist at all. However, in other cases, there are practical limitations to this level of integration.
One of the real world constraints of a road bike is that riders or mechanics need to have quick and easy access to most parts on the bike, even occasionally from the window of a moving car. Under these conditions, complete rear brake integration is problematic for road racing. We’ve found an effective and practical solution by positioning and shaping the seat stays to hide the rear brake from the wind while leaving it in a traditional position on the frame. The seat stays’ position hides the brake, and their shape improves airflow around the caliper.