Sonic/ERGO/39a Aerobar Deore thin tube is able to

thin tube is able to fit all the way through any Schrader and many Presta stems with removable valve cores

- Soft and subtle finish and moves nicely with the body

Shape design to improve air flow onto the frame

Constructed with LYCRA XTRA LIFE fiber for 5-10x more durability than ordinary spandex fabrics

ensure excellent heat dissipation while the BR-RX400’s 2 pistons guarantee solid braking performance under all conditions

Sonic/ERGO/39a Aerobar Deore thin tube is able toThe 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 optimizing their position for both speed and comfort. The 39A is one of the newest versions of our reliable aluminum extension range. Performance The Sonic Ergo is designed to present minimal frontal area to create as little aerodynamic drag as possible.