Performance Machine Speedstar Raceline Full Floating Brake Rotors are CNC precision machined to ensure a flat and parallel surface. Hardening the 420 stainless steel outer band to meet RC36 specifications coupled with a full floating design yields a rotor with a higher resistance to deformation. The wave cut braking surface is drilled in a sweep pattern for optimal heat dissipation with a reduction in weight. The inner carrier utilizes the increased strength of 7075-T6 aluminum for a lighter weight design while improving braking performance.