GiroDisc 15-21 McLaren 540C/570GT (w/Spacers w/o CCM) 380mm Slotted Rear Rings

These are the GiroDisc 380mm slotted rear rotor rings specifically for the 2015-2021 McLaren 540C and 570GT models that do not have the Carbon Ceramic Matrix (CCM) brakes and utilize spacers. GiroDisc is known for making well-built brake components, and these rotor rings are designed to be a direct replacement for your factory rear rotors, offering improved performance and durability for your McLaren. They are intended to be used with your existing rotor hats, making them a cost-effective upgrade over a full rotor assembly.

The key feature here is the slotting pattern. These slots are carefully machined into the rotor surface to help vent gases and dust away from the pad surface. This is crucial during hard braking, as it helps prevent the buildup of heat and contaminants that can lead to brake fade. By keeping the pad surface cleaner and cooler, you'll notice more consistent stopping power, especially when you're pushing the car. The rings themselves are made from a high-quality cast iron, chosen for its excellent thermal properties and wear resistance, ensuring they can handle the demands of spirited driving.

When installing these rotor rings, you'll typically reuse your original rotor hats and hardware. This means you'll need to carefully remove the old rotor ring from the hat and then bolt on the new GiroDisc ring. It's important to ensure all fasteners are torqued to the manufacturer's specifications to maintain the integrity of the assembly. These rings are designed to work with your factory brake system, so no modifications are needed to the calipers or mounting hardware, provided your vehicle is equipped with the correct factory setup (non-CCM, with spacers).