Sonic Ergo 52a Aerobar Touring Zee BR-M640 and non-series BR-MT520

Zee BR-M640 and non-series BR-MT520 and BR-MT420 calipers

The R1 Air Crew is a lightweight

2mm diameter bars

Boil Time: 2m 30sec per

Sonic Ergo 52a Aerobar Touring Zee BR-M640 and non-series BR-MT520The 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 52A is one of the newest versions of our reliable aluminium extension range. Performance The Sonic Ergo is designed to present minimal frontal area to create as little aerodynamic drag as possible.