The new range of extensions have evolved from Profile Design's well proven T-Series.  

They have been designed to offer distinct fit options. They have also adopted a new naming system whereby the name gives the angle material of the extension, Thus 43a is a 43° bend in aluminum.

The 43a extension is a great option for any rider looking for a neutralwrist angle and positioning versatility.


Improved Aerodynamics and Ergonomics - The 43a has been designed to offer great ergonomics and cost effective aerodynamic enhancement, the extension offers a ‘wrist relief’ style bend that is intended to allow the extension to hug to the arm for improved aerodynamics without sacrificing wrist comfort.The 43 degree grip angle is based on testing with riders to find a common neutral configuration.

Along with the optimized angles it has a 7.5mm per side lateral offset to the grip to allow more options for hand position.


Extension Length 400mm
Extension Angle 43 Degrees
Extension Rise 80mm (bottom to top)
Outer Diameter 22.2mm
Offset 7.5mm
Material 6061-T6 aluminum
Weight 110g/pair

The extensions will fit in any aerobar that is designed for 22.2mm.

They are designed for cables to be routed out the rear of the extensions so do not have cable exit holes.  

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