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Designed exclusively for cast-iron brake discs
The Formula:R product line is the result of collaboration with the Zimmermann-sponsored racing team.
RACETRACK USE ONLY.


Porsche 718 Boxster / Cayman 2.0ltr - 2017 Onwards
Porsche 718 Boxster S / Cayman S 2.5ltr - 2017 Onwards
Porsche 718 Boxster T / Cayman T 2.0ltr
Porsche 718 Boxster GTS / Cayman GTS 2.5ltr
Porsche 718 Boxster GTS / Cayman GTS 4.0ltr
Porsche 718 Boxster Spyder / Cayman GT4 4.0ltr
Porsche 991.1 Carrera / Carrera 4 3.4ltr - 2012 to 2016
Porsche 991.1 Carrera S / Carrera 4S 3.8ltr - 2012 to 2016
Porsche 991.2 Carrera / Carrera 4 3.0ltr - 2016 to 2018
Porsche 991.2 Carrera S / Carrera 4S 3.0ltr - 2016 to 2018
Porsche 991.2 Carrera GTS / Carrera 4 GTS 3.0ltr - 2016 to 2018
Porsche 992 GT3 - 2019 Onwards
Formula:R Brake Pads – for your perfect braking point.
Compound Type:
OZ 20: suitable for long distance series; extremely high stability of the friction coefficient over a wide temperature range
OZ 30: suitable for sprint distances; highest friction coefficient with good wear properties of brake disc and brake pad
The mixtures of the friction material of Formula:R brake pads are individually developed in cooperation with our racing team and are successfully tested in endurance racing. The durability of brake discs and brake pads are just as important as a stable friction coefficient, which ensures that the pads are extremely fading-resistant. To adapt the pads to the individual requirements of different drivers, different friction compounds are available for some applications.
Zimmermann has been manufacturing high-quality brake parts at the Sinsheim site for more than 60 years. Our brake parts are used successfully in the Nürburgring Endurance Series (NLS) under the extreme conditions at the Nürburgring and are constantly being further developed.
Made in Germany
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98135193904ZIMFR
The product you are viewing cross references to these numbers
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Zimmermann Formula:R Racing Brake Disc
The Zimmermann Formula:R racing brake disc range is the result of close collaboration with a Zimmermann-sponsored racing team. Developed specifically for circuit use, these composite discs are designed to deliver stable, repeatable braking on track-driven Porsche models and can, in some applications, be used as an alternative to very costly carbon-ceramic systems.
The discs use composite technology with a light metal hat and a high-carbon cast friction ring. By saving weight in the brake assembly – part of the unsprung mass – they contribute to a more agile, responsive feel from the chassis. Reducing unsprung weight helps the suspension follow the track surface more effectively, which can support traction and driver confidence in demanding race conditions.
Your advantages with Zimmermann Formula:R include a specially coated aluminium pot for a clean, durable appearance, and a friction ring engineered for high thermal capacity and efficient heat flow under sustained use. Internal ventilation with angled ribs is designed for optimal airflow and stability at temperature, while the distinctive Z-groove face design gives a purposeful, motorsport look and helps maintain a consistent disc surface when used with suitable racing pad compounds. These discs are developed exclusively for the race track and are not intended for everyday road use.
Brands available in this category
For this category we stock a wide choice of trusted brands for Porsche models. You can also browse and filter by brand on this page to focus on your preferred manufacturers.
When should you review or replace your Porsche formula:r racing brake disc?
On track-driven Porsche models running Formula:R components, it is important to check disc condition regularly so you can spot cracking, heat damage or loss of thickness before it compromises consistent braking feel or leads to component failure. Racing discs work in a very demanding environment and should be inspected more frequently than road hardware.
- Road discs may crack or lose performance when used at racing temperatures, making dedicated racing discs such as Formula:R a more appropriate choice for circuit use.
- Visible heat checking, cracking around drill points or at the outer edge, blue or heavily burnt surfaces, or discs approaching minimum thickness indicate that replacement should be considered.
- If you change to a different pad compound, tyre or suspension setup for racing, reviewing the discs at the same time helps maintain overall balance and consistency.
- Any vibration, pulsing, or noticeable change in pedal feel under repeated hard use on track is a cue to inspect discs, pads and hubs and replace parts where necessary.
If any of these apply, it is a good time to review your Formula:R racing brake disc and replace anything that is past its best so your Porsche stays dependable and reassuring to drive on the circuit.
Explore Zimmermann Formula:R racing brake disc with Design911
Browse Formula:R racing brake disc options for Porsche at Design911 — from individual replacement discs to matching sets for front and rear axles — and find specifications that suit your particular track build or race series requirements.