The Brembo GP4-RX is a radial CNC P4 32/32 brake caliper. The body of this caliper consists of two parts that are mechanically connected. In particular, sophisticated topological optimization software was used, which could inform the designer of the areas in which excess material could be removed, and vice versa. The hydraulics were the focus of careful fine-tuning thanks to the use of four pistons with a diameter of 32 mm, which made it possible to further increase the braking power and the modularity specifications. In fact, the nickel plating not only allowed for an aggressive and attractive appearance, but also a refinement of the already tight machining tolerances for the benefit of