The DBA 4000 T3 Series rotor is a mid-level brake rotor that has more than enough performance for any street driven car and will work very well on a weekend track toy . DBA 4000 Series rotors feature Thermal Stability Profiling (TSP) for improved heat handling. TSP enhances the micro-structure of the rotor material providing greater thermal stability. Increasing the thermal stability allows your DBA rotors to take more heat, making them more stable under heavy, frequent braking. DBA rotors with TSP will experience improved brake pad and rotor life.