Profile Design Sonic Ergo 39a Aerobar - Aluminum 400mm Black. The Sonic/Ergo 39a is designed to present minimal frontal area to create as little aerodynamic drag as possible. The main purpose of an aerobar is of course to get the rider into a fast position despite a fairly minimalist appearance the Sonic/Ergo offers a comprehensive fit range for exactly this purpose. The Sonic bracket offers an extensive fit range low weight and easy adjustment along with minimal frontal area. Combining this with the Ergo armrest creates an aerobar that will aid most riders in optimising their position for both speed and comfort.

The 39a extensions have a 39 degree angle for the grip. The rider can choose whether to hold high for the shrugged position or low for a more open head up position

100 distinct position options achievable just by moving the armrest pads to fine-tune rider fit and maximize comfort

6061-T6 aluminum construction pre-drilled for bar-end shifter cable routing

Compatible with electronic or mechanical shifters