Product Description
GiroDisc Mercedes 360mm Rear Replacement Rings D2-123
GiroDisc 2012 Mercedes-Benz C63 Black Series (W204) Slotted Rear Rings
Our replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats.
The discs are made from a proprietary cast iron formulation as to the same specification and material used by professional racing organizations. It is a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system that utilizes high-strength alloy steel drive pins manufactured by Girodisc to our own specifications and cadmium-plated for long-lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade 12 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring clips on the rotor side, which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self-center between the pads.
Please note that, unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory.