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- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 944 Turbo 2.5L 8V 1985-88
FRONT
Price is for a PAIR of discs

Fits:
Porsche 955 Cayenne 3.2L V6 2003>> (18" Wheels)
Porsche 955 Cayenne S 4.5L V8 2002>>
Porsche 955 Cayenne 4.5L V8 Twin Turbo 2002>>
FRONT Discs: KBD 1234
- Type: GROOVED 12 SLOTS
- Diameter: 350 mm
- Thickness New / Min: 34 / 32
Black Diamond 12 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufacturing to ensure they are finished to the most exacting standards.
The 12 curved radial grooves on each disc face help dissipate heat and de-glaze the pads, offering greater friction under hard braking condition and making them less likely to fade. The result is better pedal feel and improved brake response.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 944 Turbo 2.5L 8V 1985-88
REAR
Price is for a PAIR of discs

Fits:
Porsche 955 Cayenne 3.2L V6 2003>>
Porsche 955 Cayenne S 4.5L V8 2002>>
Porsche 955 Cayenne 4.5L V8 Twin Turbo 2002>>
REAR Discs: KBD 1235
- Type: GROOVED 12 SLOTS
- Diameter: 330 mm
- Thickness New / Min: 28 / 26
Black Diamond 12 Groove Discs are engineered and made using Computer Aided Design (CAD) and manufacturing to ensure they are finished to the most exacting standards.
The 12 curved radial grooves on each disc face help dissipate heat and de-glaze the pads, offering greater friction under hard braking condition and making them less likely to fade. The result is better pedal feel and improved brake response.
The unique compound and heat treatment after machining combine to provide awesome braking performance that will improve stopping power and give longer lasting durability.
Black Diamond Grooved 12 Brake Discs - Performance Braking with Enhanced Pad Control & Fade Resistance
Black Diamond Grooved 12 brake discs are engineered to deliver improved braking consistency, enhanced heat management, and superior pad contact for fast road and performance driving. Featuring 12 precision-machined grooves, these discs continuously clean the pad surface, remove brake gases and debris, and maintain optimal friction under repeated braking loads.
Available at Design911, Black Diamond Grooved 12 discs are an ideal upgrade from plain brake discs, offering sharper pedal response, reduced brake fade, and reliable performance during spirited driving—while remaining suitable for everyday road use.
What Do Black Diamond Grooved 12 Brake Discs Do?
Grooved 12 brake discs work with performance brake pads and calipers to improve braking efficiency and consistency.
Core Functions:
- Maintain clean pad-to-disc contact during braking.
- Remove brake gases, dust, and surface debris.
- Improve heat dissipation under repeated braking.
- Enhance pedal feel and braking response.
- Reduce brake fade during fast road driving.
The 12-groove pattern ensures continuous pad conditioning, helping braking performance remain predictable and consistent.
Why Do Grooved Brake Discs Wear or Fail?
Performance brake discs operate under increased thermal and mechanical stress.
Common Causes of Wear or Failure Include:
- Thermal
cycling leading to disc wear or surface cracking.
- Aggressive
braking accelerating disc and pad wear.
- Heat
build-up reducing braking efficiency over time.
- Surface
corrosion from moisture and road contaminants.
- Extended service intervals beyond recommended limits.
As discs wear or degrade, braking smoothness, consistency, and safety are compromised—making replacement essential.
Why Replace with Black Diamond Grooved 12 Brake Discs?
Replacing worn discs with Black Diamond Grooved 12 discs restores braking confidence while delivering performance-focused benefits.
Key Benefits:
- Improved braking response over plain discs.
- Enhanced resistance to brake fade.
- Continuous pad surface cleaning for consistent performance.
- Better pedal feel during spirited driving.
- Ideal for fast road and performance-oriented applications.
These discs provide a balanced performance upgrade without the compromises of drilled or full race-spec discs.
Highlights
- 12-groove performance brake disc design.
- Improved pad conditioning and braking consistency.
- Enhanced heat management and fade resistance.
- Suitable for road and fast road driving.
- Trusted Black Diamond performance engineering.