Girodisc Ford Shelby GT350 Front RotorsThis Girodisc rotor assembly is a direct replacement for the OE disc. No modifications are necessary. The assembly will bolt directly to your car and work with OE calipers and pads perfectly. The central hat section of our rotor is made from strictly U. S. sourced 6061 T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a