This is the best track and street brake rotor we have found. We have tried them all and this rotor last the longest on track and works great on the street too. Its a direct replacement for stock rotors and works with any brake pad but we use them with Carbotechs.
Install new rotors when you change brake pad families or brands. If you run Carbotechs you can switch between the track and street compounds without replacing or turning your rotors and you don't need to re-bed.