The Magnesium disc holder is a high performance piece designed for competition frames using a back tree of 40 mm. The choice of magnesium is not aesthetic: it allows a considerable weight gain with respect to aluminum, reducing the gyroscopic effect for faster rotation and a better agility of the rear yard.

Its structure is studied to maximize the flow of air, providing a function autoventilée which helps to dissipate the heat of 180 mm disk during repeated and intensive braking.