Profile Design Sonic Ergo 39a Aerobars Swim Brand_Blueseventy Dimension Two-Bolt Seatposts provide a

Dimension Two-Bolt Seatposts provide a sturdy and durable saddle perch for cross country and all-mountain riding in three diameters

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Shimano and SRAM drivetrain systems

A cycling icon reloaded: ride with pure comfort and reap the sweat-wicking benefits of Blue Tech padding

fast-drying mesh that provides exceptional ventilation to dry off after the swim and keep your feet cool and comfortable throughout the bike leg

Profile Design Sonic Ergo 39a Aerobars Swim Brand_Blueseventy Dimension Two-Bolt Seatposts provide aOVERVIEW 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 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