Sonic Ergo43a | Profile Design

TRIATHLON PROFILE DESIGN EXTENDERS SONIC ERGO 43A

Profile Design has had great success with the T3 extension of our previous bar range. The 43a is an improved version of this popular extension with a more precise shape to follow the rider's arm.

Having launched the Supersonic (J5) as a premium mount with market leading fit options and versatility, we wanted to bring the same type of options to the rest of our mount and therefore aerobar range. By simplifying the extension clamp and moving the wing forward relative to the bar axis, we were able to achieve our goals. With this simplification, the Sonic is the lightest of our current mounts.

The Ergo armrest shares the same tilting design as the rest of our next-generation armrests. Switching sides or rotating the armrests provides smaller increments of movement, allowing a rider to fine-tune their position or match it to their previous frame or bike.