Profile Design Sonic Ergo Aerobar Description: Profile Design Sonic Ergo Aerobars are designed to present minimal frontal area to create as little aerodynamic drag as possible. The Profile Design 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 riders in optimizing their position for both speed and comfort. Features: Aerobar set designed around ergonomic optionality Extension, length, and rotation can be easily adjusted Fit Data: Armrest Offset: -70mm to -2.5mm in 7.5mm steps Armrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm) Armrest Stack: 60mm to 70mm in 5mm increments (With aftermarket Riser Kit) Specifications: Length: 400mm Clamp: 31.8mm Material: Aluminum Color: Black Weight: 586g (Bracket, Armrest, Extensions)