Profile Design Sonic Ergo 43A Aerobar Extensions

The Sonic/Ergo platform offers a large range of adjustment in every dimension – enabling riders to optimise the comfort of their position. This bar can be used for draft legal triathlon once shortened to meet the ITU rules. Profile Designs new Sonic bracket has been designed as the successor to the J2, which has been a somewhat ignored part of their range. With this update it brings Profile Designs new generation fit range to a wider range of pricepoints, replacing the J2 bracket. The Ergo armrest has been created to offer both a huge upgrade in fit range as well as increased rider comfort with a supportive curve to cup the arms.

Performance
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.

Orgin
Profile Design had great success with the T3 extension from their previous range of bars. The 43a is an enhanced version of that popular extension with more precise shaping to follow the riders arm. After Profile Design released the Supersonic (J5) as a premium bracket with market leading fit options and versatility Profile wanted to bring the same kind of options to the rest of their range of brackets and thus aerobars. By simplifying the extension clamp and shifting the wing forward to the bar centreline they were able to meet their targets. As a consequence of the simplification the Sonic is the lightest of the current brackets. The Ergo armrest shares the flippable design of the rest of their new generation armrests. By swapping sides or rotating the armrests smaller increments of movement are achieved – making it simple to fine tune a riders position or match the position from their previous aerobar or bike.

Extensions
The 43a extension offers a ‘wrist relief’ style bend that is intended to allow the extension to hug to the arm for improved aerodynamics without sacrificing wrist comfort. Along with the neutral angle the grips have a 7.5mm lateral shift to allow the rider to fine tune their hand position