The fixed Serie Oro brake discs are made from a single piece of stainless steel with a design and construction that respects the very strict tolerances set with machining cycles, guaranteeing maximum surface flatness and concentricity characteristics. Drawing from its immense experience, Brembo has defined the optimum geometries, tolerances and dimensions for each motorcycle type and application. As a result of specific studies into process and machining tolerances, Brembo brake discs have a unique conformation that transfers braking torque more effectively while also improving resistance to thermal and mechanical stress.  Serie Oro is the product with which Brembo entered the racing world in the mid-70s, rapidly becoming the new standard in the sector where discs are concerned.