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- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
REAR
Price is for a PAIR of discs
Fits:
Porsche 924 1978-88 All models
Porsche 928 4.5L V8 1978-82
Porsche 928 4.7L V8 S 1980-8/1983
Porsche 928 4.7L V8 S2 9/1983-9/1986
Porsche 944 2.5L Lux 1981-89
Porsche 944 2.5L S 1986-87
Porsche 944 2.7L Lux 9/1988-6/1989
REAR Discs: KBD 2152
- Type: CROSS DRILLED & GROOVED (COMBI)
- Diameter: 289 mm
- Thickness New / Min: 20 / 18.7
Black Diamond Combi Discs are engineered and made using Computer Aided Design (CAD) and manufacturing to ensure they are finished to the most exacting standards.
The Black Diamond Combi discs feature 12 curved radial grooves on each disc face with machined holes in between each groove for excellent heat dissipation and cooling. This combination of machined surfaces also helps to 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 Drilled & Grooved Brake Discs - Performance Braking with Maximum Heat & Fade Control
Black Diamond Drilled & Grooved Brake Discs are engineered to deliver enhanced braking response, superior heat dissipation, and consistent performance for fast road and performance driving. Combining precision-drilled holes with machined grooves, these discs efficiently clear brake gases, dust, and water while maintaining optimal pad contact under demanding braking conditions.
Available at Design911, Black Diamond drilled & grooved discs are a proven upgrade over plain brake discs, offering improved pedal feel, reduced brake fade, and greater confidence during spirited driving without compromising everyday usability.
What Do Black Diamond Drilled & Grooved Brake Discs Do?
These performance brake discs work with high-quality brake pads and calipers to improve braking efficiency.
Core Functions:
- Rapidly dissipate heat generated during heavy braking.
- Vent brake gases and debris from the pad surface.
- Maintain consistent pad-to-disc contact.
- Improve wet-weather braking performance.
- Reduce brake fade during repeated or aggressive braking.
The combined drilled and grooved design delivers reliable braking performance across a wide range of road conditions.
Why Do Drilled & Grooved Brake Discs Wear or Fail?
Performance brake discs are exposed to higher thermal and mechanical loads.
Common Causes of Wear or Failure Include:
- Thermal
cycling, leading to surface cracking or distortion.
- Stress
concentration around drill holes under heavy use.
- Aggressive
braking accelerating disc wear.
- Surface
corrosion from moisture and road contaminants.
- Extended service intervals beyond recommended limits.
As discs wear or degrade, braking smoothness, consistency, and safety are reduced—making timely replacement essential.
Why Replace with Black Diamond Drilled & Grooved Brake Discs?
Replacing worn discs with Black Diamond drilled & grooved discs restores braking performance while enhancing heat control and durability.
Key Benefits:
- Improved braking response and pedal feel.
- Enhanced resistance to fade compared with plain discs.
- Better debris and water evacuation.
- Ideal for fast road and performance-oriented driving.
- Manufactured to high-quality performance standards.
These discs offer a balanced upgrade for drivers seeking improved braking without the compromises of full race-spec components.
Highlights
- Combined drilled and grooved performance brake disc design.
- Improved heat dissipation and braking consistency.
- Enhanced wet-weather and high-load braking performance.
- Suitable for road and fast road applications.
- Trusted Black Diamond performance engineering.
