Profile Design Sonic Ergo 52a Aerobar Description: The Sonic/Ergo 52a 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 optimizing their position for both speed and comfort. Features: The 52a extensions have a 52 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 Specifications Length 400 Material Aluminum Color Black Weight 586 Diameter 31.8 Diameter 26.0 Defined Color Black