The IA uses a proprietary integrated system to mount the aerobar to the bike, and they created a cadre of pieces to allow the bike to accommodate a broad range of positions and fine tune fit down to the millimeter. The stem blends smoothly with the frame and fairing clamps to the steerer tube on one end, and the basebar bolts to the other. The stem can be spaced several centimeters above the head tube, just like a standard stem. The only difference is that this integrated stem can’t be angled upward to add more stack height to be basebar position. In addition to the ability to raise the basebar, the elbow pads and extensions can be spaced upward in unison. This method relaxes fit for the aero position while preserving a more aggressive body position when gripping the brake levers to climb and corner. The extensions and elbow pad location can be moved back and forth over a wide range. All these elements add up to create a geometry scheme that can be tailored to a huge span of triathlon-specific aero fits from very aggressive to conservative.