The Sonic/Ergo 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.
Armrest Offset: -70mm to -2.5mm in 7.5mm steps
Armrest Stack: 60mm to 70mm in 5mm increments (With aftermarket Riser Kit)
Armrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm)
Extension length and rotation can be easily adjusted using the top bolt
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