Profile Design SONIC/ERGO/39A Aerobar dyson they trust in their partners

they trust in their partners and set up their bikes with the most proven and reliable components to give you all the confidence you need to go from point A to point B and back with ease

SRAM's new 4-piston

with the app you can further tune your drive unit to either save battery life or maximise the power output

Cage Material (RD): n/a

precision engineered steel cogs permanently connected with high-strength stainless steel pins

Profile Design SONIC/ERGO/39A Aerobar dyson they trust in their partnersAbout Profile Design SONIC ERGO 39A Aerobar The Sonic bracket offers an extensive fit range, low weight and easy adjustment along with minimal frontal area. Combining this with the Ergo armrest creates an aerobar that will aid most riders in optimising their position for both speed and comfort. The 39A is one of the newest versions of Profile Design's reliable aluminium extension range. Performance The Sonic Ergo is designed to present minimal frontal