GiroDisc 2-Piece Slotted Rear Rotors 2016-2020 Ford Shelby GT350

The Shelby GT350 and GT350R are built for road courses, and their rear rotors see more heat than most Mustang owners expect. These Giro Disc 2-piece slotted rear rotors replace the factory rear discs directly. They work with the factory calipers and pads, need no modifications, and pair with the GiroDisc front rotors for a matched set of floating rotors at all four corners.

Construction

The center hat is machined from US-sourced 6061-T6 aircraft-grade aluminum. The ring is GiroDisc's own proprietary cast iron, poured in the USA and machined from start to finish in GiroDisc's shop. A curved vane design developed in racing works as a centrifugal pump, forcing cooling air through the disc to keep temperatures in check through long sessions. Lighter rotors also cut rotating and unsprung weight, which helps acceleration and suspension response.

Floating mount, quiet on the street

Ring and hat are joined by 12 high-strength alloy steel drive pins, made by GiroDisc in the USA and cadmium plated for long-lasting corrosion resistance. The pins carry the braking load while keeping axial and radial float between the hat and the ring. Class 12.9 cap screws with hardened washers secure them, and anti-noise spring washers on the rotor side let the ring grow with heat without the cold rattle typical of floating rotors. The float also lets the ring center itself between the pads. Once the system is on the car, you only replace the iron ring when it wears.

What's Included

Two assembled rear rotors, one per side, each iron ring already mounted to its aluminum hat. Pads are not included.

Specifications

Fitment notes

Fits the Shelby GT350 and GT350R with factory rear brakes. It does not fit the Mustang GT, EcoBoost or Shelby GT500. Matching front rotors: A1-162. The product photo is GiroDisc's representative image of its 2-piece rotors.

Fitment