Profile Design SONIC/ERGO/39A Aerobar dyson are engineered in Germany to

are engineered in Germany to be super-light

RAILS 7x7mm CrN/Ti Alloy

Cage Material (RD): n/a

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

Profile Design SONIC/ERGO/39A Aerobar dyson are engineered in Germany toAbout 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