Front Brake Disc, 363mm diameter, ventilated construction, supplied singly.

The disc runs within the front caliper and provides both the friction surface the pads clamp against and the thermal mass that absorbs braking energy. Internal vanes between the two friction faces draw air through the disc to carry that heat away. The 363mm size is the larger front rotor used with 19-inch wheel and caliper packages, and it is not handed – the same disc serves the left- and right-hand sides.

Discs are replaced in axle pairs, together with fresh pads. Renew once the disc reaches its minimum thickness marking, or earlier if the friction face is scored or heat-checked, or if lateral runout and thickness variation have grown enough to produce brake judder.