T2 SLOT DBAs Street Series T2 rotor provides all the benefits of DBAs Street Series direct replacement rotors with the added benefit of performance braking through the introduction of DBAs patented T2 slot design. The T2 slot design features precise CNC machined bi-symmetrical slots, resulting in a quieter, more responsive and smoother brake pedal feel. The T2 slot increases the number of exit points, allowing friction dust and gases to escape and enhancing the pad bite. DBAs revolutionary universal slot design also eliminates the need for separate left and right slot designs seen in traditional rotor designs. T2 is denoted by the suffix (S) in Street Series part numbers.