Subsonic not just another aerobar bracket. It brings our next generation fit range to a low stack bracket design. This allows the bar to use  our riser kits to increase the stack without changing the relationship between the armrest and the grips. The Ergo armrest creates an aerobar that will aid most riders in optimising their position for both speed and comfort.

Performance
The Subsonic/Ergo is designed to achieve a lower stack height than  standard aerobars,without the added frontal area of a below the  basebar extension clamping system. This improves aerodynamics  and the fit range.

The extension rotation can be easily adjusted using the shaft bolt.  There is a 40mm range of extension length adjustment once the  extensions have been cut. There are 48 distinct position options  achievable just by moving the armrests.

Combine that with the risers and this bar offers 816 possible  configurations. As a clip on bar it is also possible to adjust the  extension width and tilt easily. This is the most adjustable low stack  clip-on on the market

Origin Story
After we released the Supersonic 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 thus aerobars.

Where our Supersonic and Sonic brackets have a minimum stack  of around 60mm, like most of the popular aerobars – we wanted  the Subsonic to offer a substantially lower position. This helps the  segment of the market who struggle to get into their ideal position  with modern bike frames. And it was vital that we included stack  height adjustment without altering the pad to grip relationship – so  our riders have the ability to fine-tune every aspect of their setup.

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.

Who is it for?
This bar is perfect for riders who wish to achieve lower positions  than are possible with standard aerobar designs. Unlike other low  stack bars it allows fine-tuning of the stack height so the rider is not  limited to only one armpad height. With the Race armrests fitted it is  tailored towards riders who intend to be low and narrow to punch  the smallest possible hole through the wind.