Skip navigation and go to content.
My Cart: 0 item(s)

Purchase Girodisc Rear Rotor Set
  • Girodisc Rear Rotor Set SKU: GIROA2-146

    No reviews yet. Write a review.

  • $1,700.00

  • Add Griodisc Brake Pads:

The Girodisc system is a direct replacement for the rear OE disc on the 991 GT3 and GT3 RS with OEM iron rotors.  No modifications are necessary, allows use of factory unmodified pads unlike most aftermarket solutions for this application.  The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.

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 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, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a 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 class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers 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.

Fits the following models:
- GT3 or GT3 RS models with standard brakes (red calipers) - (991 generation) 2014-2019

2-Piece design. Comes with the left and right rear rotor. Made by Girodisc. Intended for off road use only. Professional installation required. Racing brake discs need to be regularly inspected by certified mechanics.

New Option!  Add Girodisc GP40 Track Brake Pads: 

Race-ready bite, without sacrificing your rotors.  Comparible to Pagid RS29's.  Girodisc's GP40 compound falls between a sprint and endurance compound.  It maintains good bite and pedal feel while being friendly to your rotors.  They are a favorite amount track day enthusiasts and share a lineage with compounds found on cars competing in legendary races like the 24 Hours of Le Mans.  These pads have been race-tested and hold up to brutal track conditions.  

There are no reviews for this item yet. Write the first review.


Review this Item

Girodisc Rear Rotor Set
Click the stars to rate. 5 stars is the best.
All fields are required except "where you're from".
Your email is for verification purposes only and will NOT be published or shared. See our Privacy Policy. Thank you for your review!

Enter only the red text:  3Ry83862Arq!