If you just got new PowerStop Drilled & Slotted Rotors, it's important to be able to tell the difference between the left and right rotor. Installing the rotor correctly will allow for proper airflow, which leads to maximum cooling and long-term brake system performance. For PowerStop Drilled & Slotted Rotors, we provide a sticker on the hat of the rotor indicating which side it should be installed on. Luckily, if your rotors are not labeled, there is an easy way to tell. On the top side of the