4000 and 5000 series brake rotors can handle extreme applications thanks to Thermo Stability Profiling or TSP.

This unique process provies greater thermal stability than standard street discs.  TSP enhances the microstructure of the disc rotor for performance applications.

Greater thermal stability allows your discs to take more heat, making them more stable under heavy braking for longer.  TSP also means improved brake pad and disc rotor life, and delayed brake fade.