Alligator 180mm Saw-type Disc Rotor
Weighing only 114-117 grammes on our scales: Possibly the lightest all steel rotor available.
You can save upto 60g from each rotor alone while improving performance in the following ways:
More efficient heat dissipation due to vented design.
Serrated design clears mud / grime more easily than conventional rotors.
Less rotational weight = improved acceleration & reduced unsprung mass.