1989 Blue Bird TC2000 w/ 10 Hole Rotor – w/ ABS Tone Ring – and 113 mm Rotor Height – MAGMA Pro-Series Rotor – Front – Pair. 1989 Blue Bird TC2000 w/ 10 Hole Rotor – w/ ABS Tone Ring – and 113 mm Rotor Height – MAGMA Pro-Series Rotor – Rear – Pair.