Sonic Ergo 52a | Profile Design

SONIC/ERGO/52A PROFILE DESIGN EXTENDERS

The Sonic/Ergo is designed to have minimal frontal area to create as little aerodynamic drag as possible. The primary purpose of an aerobar is, of course, to get the rider into a fast position. Despite its rather minimalist appearance, the Sonic/Ergo offers a full range of adjustments to meet exactly that goal.

The 52a extensions have a 52° hand angle. The rider can choose to hold the handle high for a raised position or low for a more open, head-up position.

Technical specifications

• Support: Sonic
• Collar diameter: 31.8mm (26.0 with rims)
• Armrest: Ergo / 10mm Pads
• Armrest width : 124mm to 290mm in 18.5mm increments (with 100mm extensions)
• Armrest offset: -70mm to -17.5mm in 7.5mm steps
• Armrest Stack: Minimum is 60mm and the bracket is compatible with our existing risers which add up to 130mm of stack (70mm spacers added).
• Construction: 6061-T6 aluminum, pre-drilled for derailleur cable routing at the end of the handlebar
• Extension length: 400mm
• Extension angle: 52 degrees
• Extension Rise: 87mm (bottom to top)
• Extension offset: 15mm total
• Outer diameter: 22.2 mm
• Inner diameter: 19.2 mm
• Gear Shift Compatibility: Electronic or Mechanical
• Color: Anodized Matte Black
• Weight: 564g