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Profile Design - Sonic Ergo 45/25a

Original price $0.00 - Original price $0.00
Original price $0.00
$274.90 - $274.90
Current price $274.90



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.

Fit Data
Armrest Offset: -70mm to -2.5mm in 7.5mm steps
Armrest Width: 124mm to 290mm in 18.5mm steps
Armrest Stack: 60mm to 70mm in 5mm increments.

Since the Supersonic (J5) was released as a premium bracket with market leading fit options and versatility we wanted to bring the same kind of options to the rest of our range of brackets and aerobars. By simplifying the extension clamp and shifting the wing forward to the bar centreline we were able to meet our targets. As a consequence of the simplification the Sonic is the lightest of our current brackets.

The Ergo armrest shares the flippable design of the rest of our 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.


The 4525a extensions have a first section at 45deg and the grip at 25deg. They also have a 7.5mm lateral shift per side (15mm total) to allow fine tuning of the grip width. They are 400mm and cables exit from end of extension.

Tech Specs:

Bracket: Sonic
Armrest: Ergo / 10mm Pads
Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm)
Offset: -70mm to -2.5mm in 7.5mm steps
Stack: The minimum is 60mm and the bracket is compatible with our existing risers which add up to 70mm of stack in 5mm increments.
Color: Matte Black
Weight: 559g