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- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.2 Carrera 2 3.0L 2024>>
- Porsche 992.2 Carrera 2S 3.0L 2024>>
- Porsche 992.2 Carrera T 3.0L 2024>>
- Porsche 992.2 Carrera 4S 3.0L 2024>>
- Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
Rear Floating 2-Piece Slotted Brake Disc Kit – 350mm x 28mm
Sold as a pair
This high-performance rear brake disc kit features
two-piece floating slotted rotors designed for Porsche 992.1 Carrera S and
992.2 Carrera models. Engineered as a direct replacement for factory steel
brake discs, this upgrade delivers improved cooling, durability and braking
performance for both road and spirited driving.
Fits:
- Porsche 992.1 Carrera 2S 3.0L 2019-24
- Porsche 992.1 Carrera 4S 3.0L 2019-24
- Porsche 992.1 Carrera 2S Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4S 3.0L 2020-24
- Porsche 992.2 Carrera 2 3.0L 2024>>
- Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
Not suitable for PCCB (Porsche Ceramic Composite Brake) conversions.
Designed as a direct replacement for vehicles equipped with 350mm steel rear brake discs, including centre-lock wheel configurations.
Each assembly consists of a precision-machined aluminium hat paired with a high-carbon cast iron rotor ring, providing optimal heat management and reduced unsprung weight.
What This Brake Disc Kit Does
Brake discs convert kinetic energy into heat during braking. This upgraded system improves heat dissipation and braking consistency under load.
It helps:
• Improve braking performance and consistency
• Enhance heat dissipation during repeated braking
• Reduce brake fade under high temperatures
• Improve pedal feel and braking response
• Increase durability compared to standard discs
Advanced Two-Piece Floating Design
The floating disc construction allows the rotor ring to expand independently from the hat under heat, reducing stress and preventing distortion.
Key benefits include:
• Reduced risk of warping under heavy braking
• Improved thermal stability
• Minimized vibration and brake judder
• Enhanced performance during repeated braking cycles
High-Performance Materials & Engineering
CM-250 High Carbon Alloy Cast Iron Rotors
Manufactured using a formulated high carbon alloy for increased strength,
durability and heat resistance.
72 Cooling Vanes
Internal vane design maximises airflow through the disc, significantly
improving cooling efficiency.
Heat-Treated Rotor Rings
Stress-relieved during manufacturing to prevent deformation and vibration under
extreme conditions.
CNC Machined 6061-T6 Aluminium Hats
Lightweight yet strong, precision machined and hard anodised for corrosion
resistance and durability.
Slotted Disc Surface
Improves pad bite, helps remove gases and debris, and enhances braking
performance in all conditions.
Key Specifications
• Disc Type: 2-piece floating slotted
• Disc Size: 350mm x 28mm
• Cooling: 72 vane internal design
• Construction: High carbon iron rotor with aluminium hat
Why Upgrade Your Porsche 992 Brake Discs
Factory brake discs are designed for general road use. Under performance driving, they can suffer from heat build-up, fade and reduced efficiency.
Upgrading to a two-piece floating system provides:
• Better cooling and heat management
• Increased resistance to brake fade
• Reduced unsprung weight
• Improved braking consistency under load
• Longer service life under demanding conditions
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M992.1S992.2R
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Set of 2 brackets
Porsche 964
Porsche 944 S2 / Turbo ’87
Porsche 968
6082-T6 Aluminum, Helicoil inserts
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
SET OF 2
Fits:
Porsche 964 1989-94
Porsche 944 S2
Porsche 968 1992-95
For 964/944's with medium S4 calipers: Use 304x32mm rotors Porsche part number 92835104360 / 92835104460
For 964/944's with 993TT (Big Red Calipers): Use 322x32mm rotors Porsche part number 96535104500 / 96535104600
Note: Pictures may not show actual product. The adaptor is intended for off road use only.
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
SET OF 2
Fits:
Porsche 964 turbo
Porsche 964 RS
Kit Contains:
Brake Disc complete with centre bell.
Brake Disc Type: 2-Piece Slotted
The Girodisc system is a direct replacement for the OE disc. No modifications are necessary, and it allows the use of unmodified factory pads. The disc will bolt directly to the car and work with factory calipers.
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.
Once the Girodisc system is in place, simply replace the cast iron rotor when needed.
This product is a special order item, allow 5 - 7 working days for delivery.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
A1-046
The product you are viewing cross references to these numbers