Profile Design Sonic Ergo 39a Aerobar – Aluminum 400mm Black. The Sonic/Ergo 39a is designed to present minimalfrontal area to create as little aerodynamic dragas possible. The main purpose of an aerobar is ofcourse to get the rider into a fast position despitea fairly minimalist appearance the Sonic/Ergo offers acomprehensive 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.

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