Brake rotors are typically sold in pairs. When replacing brake rotors, it's recommended to replace both rotors on the same axle, for even braking and to avoid uneven wear. For example, if replacing the front brake rotors, it's best to replace both the left and right front brake rotors.
Some vehicles may require two sets of brake rotors (front and rear) to be purchased. This is a design choice made to ensure proper braking and should not be deviated from.
