378.32.0060.45 & 378.32.0060.46 Motorsports Replacement Rotors only for the Performance Friction Direct Drive system for the Porsche 997.2 GT3 (see complete fitment list below). Developed specifically for the GT3 Cup, the slotted rotor is slightly thinner, allowing for a thicker pad. Direct replacement for the 379.067.85/86 rotor kit. Includes Rotor only. Must be used with PFC Pads – check pad-clearance before using with any other manufacturer pads. 2-piece rotors offer better cooling over a one-piece design. Performance Friction’s full floating Direct Drive attachment system allows the brake disc to naturally expand/contract both radially and axially without being constrained by the hub. This helps eliminate rotor warping, vibrations and pulsations.