GiroDisc Porsche Cayman/Boxster (981) Base 325mm Slotted Rear Rotors

Direct replacement for OE disc with caliper spacers. Rotor is 350mm (vs. 330mm OEM), increasing braking force and cooling. Central hat is U.S. sourced 6061-T6 aircraft aluminum. Disc is proprietary cast iron, poured and machined in-house at Girodisc (USA). Curved vane design for cooling. Floating mount system with 10 (or 8) high strength alloy steel drive pins, manufactured by Girodisc in USA, cadmium plated for corrosion resistance. Pins secured by class 12.9 cap screws with hardened washers. Anti-noise spring washers prevent cold rotor noise and allow heat expansion, while maintaining float for self-centering. Replace cast iron rotor when needed. Sold/priced in pairs. Disc material and specifications as used by professional racing organizations.