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Profile Design Sonic Ergo 35a Aero Bar

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A fantastic add on aero bar for bikepacking and endurance adventure riding.

The Profile system allows for easy height adjustments using their spacers to achieve the optimal position. Setting up aero bars for bikepacking is quite different to that of an actual 'aero' position desired for triathlon and road riding - it's more about comfort and fatigue-management. We've found the Profile system offers a huge degree of customisation in a very high-quality product, without breaking the bank.


  • Bracket: Sonic
  • Clamp Diameter: 31.8mm (26.0 w/Shims)
  • Armrest: Ergo / 10mm Pads
  • Armrest Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm)
  • Armrest Offset: -70mm to -2.5mm in 7.5mm steps
  • Armrest Stack: The minimum is 60mm and the bracket is compatible with our existing risers which add up to 130mm stack with (70mm of spacers added)
  • Color: Matte Black
  • Weight: 559g


Good Rotations is an independent bicycle shop. Our aim is encourage the use of bicycles for everyday journeys and bigger adventures and to grow and expand the cycling culture where we live. We want you to love your bike!

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