The Profile Design Sonic Ergo 39A Aerobar is built for riders who want maximum adjustability and a fast, comfortable aero position. Its Sonic bracket and Ergo armrests offer a huge fit range while keeping weight and frontal area low. Features • Sonic bracket with low frontal area and wide fit range• Ergo armrests with 10 mm pads for comfort and micro‑adjustability• 39A aluminum extensions with a 39° grip angle• 400 mm extension length with easy rotation and length adjustment• 1500+ possible configurations using armrest positions and risers• Armrest width: 124–290 mm in 18.5 mm steps• Armrest offset: –70 mm to –17.5 mm in 7.5 mm steps• Armrest stack: 60–130 mm (with optional riser kit)• 31.8 mm clamp diameter (26.0 mm with optional shim)• 6061‑T6 aluminum construction, pre‑drilled for bar‑end shifters• Compatible with electronic and mechanical shifting• Weight: 586 g total• Matte black anodized finish
