Performance Machine Speedstar Raceline Full Floating 13 Front Rotor For Harley 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 custom 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. Features: Full Floating design dissipates heat, resists warping CNC precision machined Lightweight 7075-T6 inner carrier 420 Stainless steel outer band Designed for use with most OEM and aftermarket wheels Material thickness: 0.200 2.22 ID with 3.250 BCD Note: Sold individually.