GiroDisc 14-20 BMW M2/M3/M4 (F8X w/Red/Silver/Gold Calipers Incl CCM) 400mm Slotted Rear Rings

If you're looking to get the most out of your BMW M2, M3, or M4 (F8X chassis) on the track or during spirited driving, these 400mm slotted rear brake rotors from GiroDisc are a solid choice. They are specifically designed to replace the factory rear rotors on 2014-2020 models, including those equipped with the factory carbon ceramic (CCM) brake systems and red, silver, or gold calipers. GiroDisc is known for making well-built brake components that offer improved performance over stock, and these rotors are no exception.

These rotors feature a unique two-piece construction. The outer friction ring is made from a high-carbon iron alloy that's designed to withstand the heat generated during hard braking. The slots machined into the face of the rotor are not just for looks; they help to vent gases and dust away from the pad surface, which keeps the brakes working consistently even under extreme conditions. This means you get a more reliable and predictable pedal feel when you need it most. The two-piece design also helps to reduce unsprung weight compared to a one-piece rotor, and it allows the rotor to expand and contract more freely with temperature changes, which can help prevent warping over time. The hat section is typically made from aluminum, further reducing weight and providing a strong mounting point for the friction ring.

When installing these rotors, you'll want to ensure you're using appropriate brake pads that are compatible with slotted rotors and your specific driving needs. It's also a good idea to check the condition of your brake fluid and calipers to make sure everything is in top shape for optimal performance. These rotors are a direct replacement for your factory units, making the installation process straightforward for someone familiar with brake service.