Improvements in manufacturing allow us to upgrade our carbon extensions for lower weight and the ability to fit Di2 parts inside using the Aeroport. The dimensions are the same as the previous generation 35, 50 and 4525, with the addition of the 43 to complete the range.

45/25C
The 4525C extensions offer a 45deg lower and 25deg upper section. This allows the rider to choose between a low, short reach position or a high hands, stretched position for aerodynamics. They are 400mm long and can be cut to size to suit nearly every rider. They are drilled for rearexit cable routing.

Tech Guide
Clamp Diameter 22.2mm
Length 400mm


The series offers a great range of size options and class leading low weight while still meeting our stringent testing standards.