Toyota Prius 2004 – 2009 All Trim Levels Front. Front Brake Rotors Set of 2 Driver and Passenger Side. 2 R41379 Brake Rotors. Disc brake rotors are essential to your vehicle’s braking system. Failure to replace a compromised disc brake rotor apparent by the excessive noise and vibration it may cause can lead to a loss in your vehicle’s stopping power, putting you at risk.