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. The laser engraved PM logo on the floating elements will let everyone know you are serious about performance. PM Raceline Full Floating Brake Rotors are designed for use with most O.E.M. and aftermarket wheels and calipers.