Features: The standard in aftermarket circular-round Brake Rotors. Durable, premium quality stainless steel Outer Ring is laser-cut and precision-ground. Venting holes are sized and positioned exactly to ensure equal heat dispersion, even under high thermal stress, while the Brake Pad contact surface stays clean. Brake Rotor Halo Fixed Rear, KTM, Outer Diameter 230mm Inner Diameter 125,3mm Pitch 144mm Thickness 4mm.